Time: 3 Hr M.M. 70

1. All question are compulsory.

2. The question paper consists of four sections A,B,C and D. Section A contains 8 question of 1 mark each. Section B is of 10 questions of 2 marks each. Section C has 9 questions of 3 marks each where as Section D is of 3 question of 5 marks each.

3. There is no overall choice. However, an internal choice has been provided in one question of 2 marks, one question of 3 marks and one question of 5 marks weightage. A student has to attempt only one of the alternatives in such questions.

4. Wherever necessary, the diagrams drawn should be neat and properly labeled.

[Section - A]

Q. 1. What do you understand by the term taxonomic hierarchy?

Q. 2. What are Halophiles? How Halophile have unique mode of energy intake.

Q. 3. What are Dinoflagellates?

Q. 4. What are the normal values of blood pressure in the artery?

Q. 5. What are swarm cells? Where do you find them in slime moulds?

Q. 6. Which is causing agent, and vector of the sleeping sickness?

Q. 7. Name the enzyme secreted by the small intestine that activates the pancreatic proteases?

Q. 8. Differentiate between N, 2N and N+ N conditions.

[Section - B]

Q. 9. Which hormone is known as birth hormone and why?

Q.10. What is Binomial nomenclature? Give two basic rule of binomial nomenclature?

Q.11. Explain the role of heterocyst in Cynobacteria. Give the term formerly use for Actinomycetes.

Q.12. What is heterothallism? Give one example of heterothallism.

Q.13. Give the botanical name of a plant of family Solanaceae. Show the floral formulae and floral diagram of same plant.

Q.14. Where does cerebrospinal fluid occur in our body? Mention any two of its functions.

Q.15. Give three form of thalamus as regards of insertion of pistil and perianth or other floral organ and give example of each type.

Q.16. Draw a well labeled diagram of digestive system of frog.

Q.17. Draw life cycle of Malarial parasite.

OR

Draw a well labeled diagram of mitochondria.

Q.18. Identify the following animal, give zoological name and phylum of this animal.

Give two unique feature of same phylum.

[Section - C]

Q.19. What is nerve impulse? Describe the conduction of nerve impulse in a non medullary and medullary nerve fiber.

Q.20. What is meant by sympathetic co adrenal system? Give function of adrenal gland during emergency condition of a person.

Q.21. Explain the formation of root nodule in a legume plant? Why is it pinkish in colour? Give its advantage

Q.22. Describe role of joints in body movement. Give example of two synovial joint with direction of bone movement in locomotion of a student.

Q.23. What do you mean by term short day and long day plant. Why these term are misnomer.

Q.24. How Co2 transport in our body?

Q.25. Briefly state the mechanism of urine formation in human kidney.

Q.26. Draw the flow diagram of Calvin cycle.

Q.27. Give unique feature of phylum Echinodermata and Cnidaria. What are the basis of the name Echinodermata and Cnidaria of these phyla? Give two example of each phylum.

OR

Give name of type of Placentation and Aestivation with example of each type:

[Section - D]

Q.28. (a) How many molecules of ATP and how many molecules of NADPH are produced by one molecules of fructose 1,6 bi phosphate in glycolysis ?

(b) Draw main steps of Krebs’ cycle.

OR

What is ascent of sap? Give most acceptable theory of ascent of sap in higher plants.

Q.29. What is Digestion? What are endopeptidases and exopeptidases. How protein digest in our body.

OR

(a) What is cork cambium? Give the name of tissue form by cork cambium.

(b) Draw T.S. of part of a typical monocot root.

(c) What are fairy rings?

Q.30. Describe following terms.

(A) Annual rings in plants (B) Venation in plant leaf

(C) Stigmata in cockroach (D) Cocoon in earthworm

(E) Dry bone

OR

Where would the following structures be found in a cell and give one function of each?

(A) Microtubules (D) Ribosome

(B) Thylakoid (E) ER

(C) Oxisomes

Time: 1:30 hr, MM : 60

I. Answer the following Questions: (1mark each)

a) Calculate the molecular mass of methane (CH?) and glucose (C?H¹²O?) molecule.

b) Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is 0.040(assume the density of water to be one).

c) The mass of an electron is 9.1X10?³¹Kg.If its kinetic energy is 3.0X10?²?J.Calculate its wavelength.

d) Write the general electronic configuration of d-block and f-block elements.

e) Write the atomic number of element present in the third period and seventeenth group of periodic table.

f)Considering the elements F,Cl,O,N, the correct order of their chemical reactivity in terms of oxidizing property is: F>Cl>O>N F>O>Cl>N Cl>F>ON O>F>N>Cl

g) Which out of NH³ and NF³ has higher dipole moment and why?

h) What are intermolecular forces?

i) Write lewis structure of C²H² and N².

j) What are isoelectronic species? Give example.

II.Answer the following questions: (2 marks each)

a) What is the total number of sigma and pi bonds in these molecules: C²H² and C²H4

b) Explain with the help of example polar covalent bond.

c) Would you expect the first ionization enthalpies for two isotopes of the same element to be same or different? Justify your answer.

D) If ten volumes of dihydrogen gas react with five volumes of dioxygen gas, how many volumes of water vapor would be produced?

e) A photon of wavelength 4X10?7 strikes on metal surface , the work function of the metal being 2.13 eV. Calculate i)the energy of the photon (eV), ii) the kinetic energy of the emission, iii)the velocity of the photoelectron (1eV = 1.6020X10?19J).

III. Answer the following questions: (any five – 3 marks each)

a) When electromagnetic radiation of wavelength 300 nm falls on the surface of sodium,electrons are emitted with a kinetic energy of 1.68X10 5 J mol?¹.What is the minimum energy needed to remove maximum wavelength that will cause a photoelectron to be emitted?

b) What is basic difference between the terms electron gain enthalpy, electronegativity and Ionization enthalpy? Give example of each.

c) a)How many sub-shells are associated with n=4? b)How many electrons will be present in the sub-shells having ms value of -½ for n=4.

d) How would you explain the fact that the first ionization enthalpy of sodium is lower than that of magnesium but its second ionization enthalpy is higher than that of magnesium?

e) A vessel of 120 ml capacity contains amount of a gas at 35ºC and 1.2 bar pressure. The gas is transferred to another vessel of volume 180ml at 35ºC. What would be its pressure?

f) Describe the bonding in O² molecule and show the increasing order of energies of various molecular orbitals for O².

IV. Answer the following questions: (any five – 5 marks each)

a)Define Hybridisation with its types giving examples of each.

b)i)State ideal gas equation.

ii) At 25ºC and 760mm oh Hg pressure a gas occupies 600 ml volume. What will be its pressure at a height where temperature is 10ºC and volume of gas is 640ml.

c) Describe the electronic configuration and show the filling of orbitals of the following elements: Cr , Ni, Cu, Si, Se.

d) i) Calcium carbonate reacts with aqueous HCl to give CaCl² and CO² according to the reaction, CaCO³(S)+2 HCl (aq) —à CaCl²b (aq) + CO² (g) + H²O(l) . What mass of CaCO³ is required to react completely wit 25ml of 0.75M HCl? ii)What will be the pressure of the gaseous mixture when 0.5 l of H² at 0.8 bar and 2 l of dioxygen at 0.7 bar are introduced in a 1l vessel at 27ºC?

e) i) Write the Lewis structure of C²H? , N² , HNO? , (CO³ )²? , CH³COOH. ii) Define resonance with the help of example.

f) i) State: Heisenberg Uncertainity Principle, Paulis’s Exclusion Principle, Hund’s rule of maximum Multiplicity ii) A golf ball has a mass og 40 g, and a speed of 45m/sec. If the speed can be measured within accuracy of 2 %, Calculate the uncertainty in the position.

General Instructions:

1. All Questions are compulsory.

2. Programming Language is C++.

1.

i) State the basic units of the computer and give function of each of the unit 2

ii) What is difference between interpreter and complier? 2

iii) Explain briefly the major innovations in generations of computer. 3

iv) write short on booting process 2

v) Expand the following: BIOS, ASCII 1

2 .

i) Define operating system ?Give the 2 examples of operating systems 2

ii) What are the functions of the operating system? 3

iii) Write the 4- examples of DOS commands. 2

iv)Explain the different types of Operating Systems 3

3.

i) What are the difference between a keyword and an identifier? 2

ii) How will you include comments in c++? How many types of comments are there in c++ language? 2

iii) Why include iostream.h in c++ programming 2

iv) What do you mean by cascading ?.Give the examples. 2

v) What are the differences between syntax and runtime errors? Give example. 2

4.

i) Write a short notes on Fundamental data types . 3

ii) What is type coasting ? Explain with example. 2

iii) Distinguish between a unary, binary and a ternary operator. Give example of c++ operators for each one of them. 3

iv) Write the equivalent C++ expression for the following expressions: 2

a) b) p+q/(r+s)4

5.

i) Define Flow chart and Algorithm . 2

ii) Draw a flowchart that picks the largest of three given numbers 3

iii) Write an algorithm to find whether a given number is odd or even 3

iv) Draw the symbol used in the flow chart for connector and

comments(annotations) 2

6.

i) Name the header files required for successful execution of a program that uses the following components: 1

i) getch() ii) ceil( )

ii) Write a program in C++ to accept marks in five subjects for a student and display the average mark. 3

iii) Write a program in c++ to convert temperature in Celcious to Fahrenheit? 3

iv) What will be the output of the following code fragment? 3

.

.

.

int year;

cin>> year;

if((year % 100= =0) && (year%400= =0))

{

cout<<”Leap”;

}

else

cout<<” Not a century year.

If the input given is

i) 2000

ii) 1900

iii) 1971

7.

i) Predict and correct the logical error present in the following code fragment: 1

if(k=1)

cout<<”ONE”;

else

cout<<” NOT ONE”;

ii) Write a program to calculate the area of a circle or triangle or rectangle according to the choice given by the user. 3

iii) Write a program to print whether a given character is an uppercase or lowercase or a digit or any other character. Use ASCII for it .The ASCII codes are as given below : 4

Characters ASCII range

‘ o’ – ‘9’ 48 – 57

‘A’ – ‘Z’ 65 – 90

‘a’ – ‘z’ 97 – 122

Other characters 0 – 125 excluding the above mentioned

Codes

iv) Convert the following conditional statement into its equivalent if-else statement.

N=((a<b)?a:b); 2

Very short Answer question, 1 X 10 = 10

1. Name any five input devices.

2. What is hardware?

3. Expand the term OCR

4. What is compiler?

5. What is the difference between machine language and high-level language?

6. What is WWW?

7. What is the meaning of word MODEM?

8. What is protocol?

9. Expand the term URL?

10. What is the purpose of CU and ALU?

Short Answer Question, 2 X 10 = 20

1. Explain the working of CPU?

2. Explain the Different element of computer network?

3. What is the difference between LAN and WAN?

4. What are search engine? What are their uses?

5. What is Single user and multi user operating System?

6. Explain the function of an operating system?

7. Explain the different software utility?

8. What is scanner? What are the different types of scanner?

9. What is the main characteristic and limitation of computer?

10. Explain the briefly : – a) RAM b) Light Pen

Long answer Question: –

1. What is internet? Explain the uses of internet?

2. Explain the various types of operating system?

3. What are the difference between system software and application software?

Sample Paper – 2011

Class – XI

Subject –English

Q. Read the following passage carefully and answer the questions by writing the options that you consider the most appropriate in your answer sheet.

Fifty years ago people ate ice cream only in summer .Now it is eaten all the year round. It originated in the Orient, centuries before English schoolboys first tasted it. Marco Polo saw people eating ice cream there and brought back the idea to Italy. From Italy the idea was carried to France, It became very popular in France with the rich, and an effort was even made to keep the recipes a secret from the common people. But, of course, they soon learned about this delicious new food and ice cream became popular with everyone. Soon it spread all over the world. The first factory to manufacture ice cream was started in Baltimore, Maryland, in 1851. However, the real development of ice cream and the ice cream business didn’t take place until after 1900 with new developments in refrigeration.

The basis of all ice cream is cream, milk or milk solids, sugar, and sometimes eggs. Vanilla, chocolate, berries, fruit ingredients, and nuts are added as flavors. This is the usual proportion of ingredients in ice cream: about 80 to 85 percent cream and milk products, 15 percent sugar, half to four and a half per cent flavoring, and three-tenths of one per cent stabilizer.

A small amount of gelatin is used in order to retain the smoothness of the ice cream by preventing the formation of ice crystals.

When you eat a third of a pint of vanilla ice cream, you are getting about as much calcium, protein, and vitamin B as are in half a cup of whole milk, and as much vitamin A and calories as are in one cup of milk.

1. The major change towards Ice cream is that

a.it is eaten throughout the year

b.it is eaten as a desert

c.it is eaten in summer

d.it is eaten in winter

2. Ice cream became popular with everyone

a.when the idea was carried from Italy to France

b.when English school boys tasted it

c.when the rich in France started eating it

d.when the common people learned about its recipe

3. The introduction of refrigeration led to the

a.increased consumption of ice cream

b.development of the ice cream business

c.increase in the production of ice cream

d.improvement in the quality of ice cream

4. The smoothness of ice cream is retained by

a. forming ice crystals

b. using a small amount of gelatin

c. using eggs

d. using cream and milk

5. Find a word from the passage that means the same as “tasty”

a. recipes

b. gelatin

c. delicious

d. flavouring

Q. Read the given poem carefully and answers the questions by writing options you

Consider the most appropriate in your answer sheet against the correct question number.

PETE AT THE ZOO

I wonder if the elephant

Is lonely in his stall

When all the boys and girls are gone

And there is no shout at all,

And there is not one to stamp before,

No one to note his might.

Does he hunch up as I do?

Against the dark of night?

Gwendolyn Brooks

6 . From these lines we understand that the speaker:

a. is fond of the dark

b. is scared of being alone

c. enjoys being alone

d. hates being left alone in the dark

7. The speaker wonders if the elephant is lonely because:

a. all the boys and girls have gone

b. the boys and girls are no longer playing with the elephant

c. the speaker has not visited the elephant

d. the speaker herself is lonely

8. The elephant hunches up because

a. he is tired and lonely

b. his back is aching

c. he is frightened of the dark

d. he is frightened of the other animals

9. With reference to the poem, what does ‘might’ mean?

a. Uncertainty

b. Doubt

c. Strength

d. Ability

10. The last two lines suggest that the poet

a. enjoys being alone as she finds the children too noisy

b. likes night because she is not very social

c. does not like night because it makes her feel lonely

d. does not like night because the elephant is not with her

Q . Read the following dialogue and then complete the report by choosing the correct Options from the ones given below. Write your answers in your answer sheet with The correct blank number. Do not copy the dialogue and the report:-

Utkarsh: I have lost my wallet

Inspector: How did you lose it?

Utkarsh: My pocket was picked

Inspector: Where did it happen?

Utkarsh: In the local market, sir.

Utkarsh reported to the inspector (11)_______lost his wallet. The inspector asked him (12) ___________Utkarsh replied (13) ________.The inspector further asked him where it had happened. Utkarsh replied that it had happened in the local market.

11. (a) that I had (c) that he had

(b) That he has (d) that I have

12. (a) How he has lost it (c) how he had lost it.

(b) How had he lost it? (d) How he had lost that

13. (a)my pocket has been picked (c) if his pocket had been picked

(b) That his pocket had been picked (d) whether his pocket has been picked

Q. Complete the following passage by choosing the correct passive forms of the verbs given in brackets from the alternatives given below the passage. Write only your answers in the answer sheet against the blank number.

An exhibition (14) ________ (hold) in Andhra Pradesh. A young girl (15) ________ (ask) not to allow anyone to enter without a ticket. When Nehruji tried to enter without a ticket, she stopped him saying that no one (16) __________ (allow) to enter without a ticket.

14. a) held b) was held c) is held d) will be held

15. a) asked b) was asked c) is asked d) has asked

16. a) allowed b) was allow c) was allowed d) is allowed

Q. Complete the dialogue by choosing the correct alternative from those given below.

Write your answers in the answer sheet against the correct number.

Swati: Your sister is very beautiful. Please tell me (17) _____________.

Mohit: I want to tell you (18) ________.

Swati: Then please tell me (19) _________________.

Mohit: She is in fact my niece who has come to spend her holidays with us.

17. A) what she was doing b) what was she doing?

c) What she is doing d) what is she doing?

18 .a) if she was not his sister b) whether is she not my sister

c) That she is not my sister d) that she was not my sister

19. a) who she is b) whose she is.

c) who is she d) whom she is

20. Ban on smoking

Smoking ____________in all public places.

(a) is banned

(b) has been banned

(c) was banned

(d) will be banned

Q 1 Edit the passage. (4 Marks )

Orange is a festival colour. It releases emotions (a) ____

and alleviates feelings for self pity. It stimulates (b) ____

the mind and renews an interest in life. It is (c) ____

a color of health and strength. It can be scarce, (d) ____

but it is precious for its serves the needs of human (e) ____

life and carry the more important vitamins. Think of (f) ____

carrots, pumpkins, orange and mangoes etc.(g) ____

It doesn’t hang around all the time, but when it do,(h) ____

it fills the sky with its striking hue.

Answer option are:-

(a) (i) festival (ii) festivals (iii) festivity (iv) festive

(b) (i) for (ii) of (iii) from (iv) off

(c) (i) an (ii) a (iii) the (iv) this

(d) (i) can (ii) will (iii) should (iv) may

(e) (i) its (ii) his (iii) they (iv) it

(f) (i) more (ii) some (iii) most (iv) any

(g) (i) orange (ii) oranges (iii) Orange (iv) orange’s

(h) (i) do (ii) did (iii) does (iv) done

Q 2. In the following passage one word has been omitted from each line.

Write the missing words. (4 Marks )

Working women / more likely to write (1) are

long emails / express support and are (a) ___

emotive, while men prefer / stick to the (b) ___

point with precise orders, says / new book. (c) ___

Authored / Claire Damken Brown examines (d) ___

different email styles adopted by men / (e) ___

women in / workplace. Women get accused (f) ___

of being emotional. On the other /, men (g) ___

will act / a more challenging manner, playing (h) ___

devil’s advocate in tense situations.

Answer option are :-

(a) (i) that (ii) these (iii) the (iv) this

(b) (i) of (ii) to (iii) from (iv) for

(c) (i) a (ii) this (iii) an (iv) the

(d) (i) by (ii) for (iii) from (iv) with

(e) (i) or (ii) and (iii) but (iv) that

(f) (i) that (ii) those (iii) the (iv) this

(g) (i) angle (ii) place (iii) space (iv) hand

(h) (i) on (ii) at (iii) in (iv) for

Q 3. Look at the newspaper items given below. Use the information in the headlines to complete the paragraphs. (4 Marks )

News Headlines : SAMSUNG LAUNCHES SOLAR POWERED PHONE

NOIDA, June 11: Leading mobile handset manufacturer (a) ____________________ a low-cost solar-powered mobile phone today in a grand function at Pragati Maidaan, and said it was planning to introduce about 20 more models by year-end.

News Headlines : INDIA CHINA PLAN TO SIGN PACT ON CLIMATE CHANGE

NEW DELHI: Reiterating that the United Nations Framework Convention on Climate Change, a Memorandum of Agreement to establish a partnership in the area for practical cooperation (b) _________________ on next Monday.

News Headlines : RURAL STINT TO FETCH DOCTORS DOUBLE PAY

NEW DELHI, Sept 17: Doctors who opt to work in rural areas will be duly compensated and (c) ____________________ of what their urban counterparts, during their rural stint, announces health minister Ghulam Nabi Azad on Thursday.

News Headlines : CHAINA’S OPPOSITION TO DALAI LAMA’S VISIT

Oct. 23: The Dalai Lama, the supreme spiritual leader of the Buddhists, will visit Arunachal Pradesh for seven days from November 8, though his trip to the Himalayan state (d) ___________________________.

Answer option are :-

(a) (i) Samsung was launched

(ii) Samsung was launching

(iii) Samsung has launched

(iv) Samsung has been launched

(b) (i) will be signed between India and China

(ii) has been signed between India and China

(iii) was signed between India and China

(iv) could have been signed between India and China

(c) (i) they fetched double pay

(ii) they may fetch double pay

(iii) they had fetched double pay

(iv) they might fetch double pay

(d) (i) has been opposed by China

(ii) has opposed by China

(iii) will have been opposed by China

(iv) were opposed by China

Q 4. Complete the following dialogue. (4 Marks )

Timmy : Sheena, there’s a Mr. Miller on the phone (a) _________.

Sheena : I am busy at the moment. (b) _________________ hold ?

Tell him I’ll talk with him in a few seconds.

Timmy : O.k (c) ______________________________ hold.

Sheena : Fine, I am coming in a second.

Timmy : Yes, be fast. He (d) ____________ hurry.

Answer option are :-

(a) (i) which wants to talk to you

(ii) who wants to talk to you

(iii) who wanted to talk to you

(iv) that wants to talk to you

(b) (i) can you ask him to

(ii) can you say him to

(iii) may you ask him to

(iv) may you say him to

(c) (i) I set him on the hold

(ii) I have set him on the hold

(iii) I have put him on the hold

(iv) I put him on the hold

(d) (i) is in a hurry

(ii) was in a hurry

(iii) is in hurry

(iv) was in hurry

Q 5. Read the conversation between Joy and Harry. A few words have been jumbled. Rearrange the words to form meaningful sentences. (4 Marks )

Joy: What’s going on? You don’t look fine !

Harry: I have a stomachache. (a) bad food/ today/ i/ I think/ lunch/ at/ have got / some.

Joy: Really ? But we ate at the same place. (b) fine / come/ stomach/ how / my/ is ?

Harry: (c) iron stomach/ the other hand/ an/ isn’t/ you/ strong/ have /as / on/ my stomach/ and.

Joy: So what should we do now?

Harry: I’ve got to find a restroom – and quick ! (d) royal/ have/ I think/ runs/ I / the / got.

Answer option are :-

(a) (i) I think I got some bad food at lunch today

(ii) I got some bad food at lunch I think today

(iii) Today I think I got some bad food at lunch today

(iv) some bad food at lunch today I think I got.

(b) (i) How my stomach come is fine?

(ii) How is come my stomach fine?

(iii) How come my stomach is fine

(iv) How come my stomach is fine?

(c) (i) You have an iron stomach isn’t as strong and my stomach, on the other hand,

(ii) on the other hand, You have an iron stomach and my stomach, isn’t as strong

(iii) You have an iron stomach and my stomach, on the other hand, isn’t as strong

(iv) You have an iron stomach and my stomach, isn’t as strong, on the other hand

(d) (i) I think I have got the royal runs

(ii) I think I have got the runs royal

(iii) I have I think got the royal runs

(iv) I have got the royal runs, I think.

TIME: 3hr, MAXIMUM MARKS: 100

Notes:

1. All questions in both the sections are compulsory.

2. Question Nos. 1-5 and 17 – 21 are very short- answer questions carrying 1 mark each. They Are required to be answered in one sentence each

3. Question Nos. 6-10 and 22-26 are short-answer questions carrying 3 marks each. Answer to Them should not normally exceed 60 words each.

4. Question Nos. 11-13 and 27-29 are also short- answer questions carrying 4 marks each. Answer to them should not normally exceed 70 words each.

5. Question Nos. 14-16 and 30-32 are long-answer questions carrying 6 marks each. Answer To them should not normally exceed 100 words each..

6. Answer should be brief and to the point and the above word limit be adhered to as far as Possible.

Statistics for Economics

1. Find out the odd one and justify your answer?

Mark, weight, income, honesty

2. What is primary data?

3. What is a Lorenz curve?

4. Name the two types of index number?

5. Define statistical series.

6. What are the qualities of a good questionnaire?

7. ‘Statistics are numerical statements of facts but all facts numerically stated are not statistics’ comment.

8. Draw a histogram from the following data.

Marks in Mathematics	0-10	10-20	20-30	30-40	40-50
Number of Students	4	20	25	15	5

9. A student subject 70 mark in English,65 in Hindi,63 in maths,59 in economics and 55 in Statistics. Calculate weighted mean of the marks if weights are respectively 2, 1, 5, 5 and 3.

10. Why is standard deviation considered to be the most popular measure of dispersion?

11. Write note on ,

a. SENSEX

b. Consumer price index

OR

Discuss the kinds and degrees of correlation?

12. Draw a pie diagram to represent the following data of investment pattern in the third five year plan.

Agriculture=35%, irrigation=20%, small scale industries=25%, transport=10%, others=10%

13. Calculate standard deviation for the following data.

Age	20-30	30-40	40-50	50-60	60-70
Number of Workers	3	12	15	6	4

14. Calculate Karl Pearson’s coefficient of correlation from the following data:

Age of husband	20	21	22	23	24	25	26
Age of wife	17	18	19	20	21	22	23

15. Calculate mean, median and mode from the following data set.

Mark in Hindi	0-10	10-20	20-30	30-40	40-50	50-60	60-70	70-80
Number of students	5	15	18	12	20	15	7	3

16. You are planning a study about the literacy rate of shop keepers in your locality. Construct a questionnaire to interview them.

Indian Economic Development

17. What is ‘poverty line’?

18. What do you mean by sustainable development?

19. Define globalization?

20. Who is the chairman of seventh planning commission?

21. According to’ Times of India’ report on December 2009,

a. Indian economic growth was……………

b. Food inflation I India……………..

22. What are the consequences of global warming?

23. What are the important sources of human capital formation?

24. Which are the important sources of power generation?

OR

What are the different categories of poor?

25. Which sector of the economy was adversely impacted by reforms? Why?

26. What do you mean by outsourcing?

27. What is the role of NABARD in rural development?

28. Discuss the main features of economic policies (1950-90)

OR

Examine the main features of the land reforms implemented in India?

29. Do you think India can emerge as a knowledge economy? If yes, why?

30. “Earth provides everything for every man’s needs but not for every man’s greed” interpret this famous statement of Gandhi.

31. “British rule had both harmful as well as beneficial effects on the Indian economy” Discuss the statement by giving suitable examples.

32. Compare the demographic features of India, china and Pakistan.

OR

What are the causes of unemployment in India? How do you explain seasonal unemployment in agriculture?

TIME: 3 hours – 3½ hours, Maximum Marks: 80

General Instructions:

(i) All questions are compulsory.

(ii) The question paper consists of 34 questions divided into four sections – A, B, C and D. Section A comprises of 10 questions of 1mark each, Section B comprises of 8 questions of 2 marks each, Section C comprises of 10 questions of 3 marks each and section D comprises of 6 questions of 4 marks each.

(iii) Question numbers 1 to 10in section A are multiple choice question where you are to select one correct option out of the given options.

(iv) There is no overall choice. However, internal choice has been provided in 1question of 2 marks, 3 questions of 3 marks each and 2 questions of 4 mark each. You have to attempt only one of the alternatives in all such question.

(v) Use of calculator is not permitted.

Section- A

1. Any angle in the semicircle is

(a) 900 (b) 1800 (c) 2700 (d) 3600

2. Curved surface Area of Cylinder is

(a) ?r2 (b) 2?rl (c) 2?rh (d) ?rl

3. CSA of Dome (hemisphere) is

(a)2?r2 (b) 4?rl (c) 3?r2 (d) ?rl

4. Mode of 14, 15, 15, 18, 20, 21,21,21,25 is

(a)18(b)19 (c) 20 (d) 21

5. Find angle ?DCP

(a)1400 (b) 1100 (c) 700 (d) 600

6. The mean of 16 numbers is 8. If 2 is multiply to every number, what will be the new mean.

(a) 16 (b) 12 (c) 10(d) 8

7. 1m3 =……..cm3

(a) 1000(b) 10000 (c) 100000(d) 1000000

8. In a cyclic quadrilateral one angle is 600 then exterior angle will be

(a) 1020 (b) 600 (c) 3600(d) None of these

9. Height of cone is equal to

(a) ?rl (b) r2+h2 (c) ?l2-r2 (d) ? r2+h2

10. Surface area of circle = …?….. Surface area of Sphere

(a) 1/2 (b) 1/3 (c) 1/4 (d) 1/5

Section B

11. Find the mean of 13, 19, 25, 60, 49, 36, 30, 32, and 56? And if 13 is misread by 31, what will be the new mean?

12. ABCD is a cyclic quadrilateral in which AC and BD are diagonals. If And Find .

14. Two coins are tossed simultaneously. The outcomes of getting tails are recorded.

Number of tails 0 1 2

Outcomes 22 16 12

Calculate the probability of getting (a) exactly 1 tail (b) no tail (c) at least 1 tail

15. How many liters of milk can a hemispherical bowl of diameter 10.5cm hold?

16. A conical tent is 10m high and the radius of its base is 24m. Find area of cloth used.

OR

Construct a triangle in which QR = 5cm, ? Q= 750 and PR-PQ= 2.5 cm.

17. Find the value of a and b such that the following equations may have (5, -3) as a solution 5x + ay = -2 7x+by = 4b

18. If the point (3, 4) lies on the graph of the equation 3y=ax+7, find the value of a?

OR

Draw the graph of the equation 2x + y = 4. From the graph

Section C

19. Write the four solutions for the equation x=4y-1

20. Two circles intersect at two points B and C. Through B, two line segments ABD and PBQ are drawn to intersect the circles at A, D and P, Q respectively (See fig.). Prove that ?ACP =? QCD

OR

In Fig. , AB is a diameter of the circle; CD is a chord equal to the radius of the circle. AC and BD when extended intersect at a point E, Prove that ? AEB = 600

21. ABCDE is a pentagon .and a line through B parallel to AC meets DC produced at F. Show that (i) ar(ACB)=ar(ACF) (ii) ar(AEDF)=ar(ABCDE)

22. Draw the graph of the equation 2x – 3y =5. From the graph, find the value of x when (i) y = 1 and (ii) y = 3

23. If E, F, G, H are respectively the mid points of the sides of a parallelogram ABCD, show that ar (EFGH) = ½ (ABCD).

24. Here is a linier equation that converts Fahrenheit to Celsius:

F= ( ) C+32

(i) if the temperature is 950F, What is the temperature in Celsius?

(ii) Is there temperature which is numerically the same in both Fahrenheit and Celsius if yes, find it?

25. A bag contains 5 red, 3 green and 2 blue marbles. A marble is selected at random from the bag. Calculate the probability of getting (a) a red ball (b) a blue ball (c) not a blue ball.

OR

Construct a triangle with base of length 5cm, sum of two sides 7.7cm and one of the angles of the base as 750.

26. If the mean of the following distribution is 21, find the value of x

x: 10 15 20 25 30

f: 6 10 x 10 8

OR

If the mean of five observations, x, x+2, x+4, x+6 and x+8 is 11. Find the mean of the first three observations

27. ABCD is a trapezium with AB || DC. A line parallel to AC intersects AB at X and BC at Y. Prove that ar (ADX) =ar (ACY).

28. Show that the bisectors of angles of a parallelogram form a rectangle.

Section D

29. If the work done by a body on application of a constant force is directly proportional to the distance travelled by the body. Express this in the form of an equation into variable and draw the graph of the same by taking the constant force as 5 units. Also from the graph the work done when the distance travelled by the body is

(1). 2 units (2). 0 units

30. Construct a triangle XYZ, in which ?X=450, ?Y=600 and XY+YZ+ZX=10.5cm

31. 2000 families with 3 children were selected at random and the following data is recorded

Girl child in family	0	1	2	3
No. of families	475	814	111	600

Find.

a) probability of family having 0 girl

b) probability of family having 1 girl

c) probability of family having 2 girl

d) probability of family having more than 1 girl

e) probability of family at least 1 girl

32. In figure ABCD is a parallelogram and E, F is the midpoints of sides AB and CD respectively. Show that quadrilateral AECF is a parallelogram.

OR

A circular park of radius 20m is situated in a colony. Three boys Ankur, Syed and David are sitting at equal distance on its boundary each having a toy telephone in his hands to talk each other, Find the length of the string of each phone.

33. It costs Rs.2200 to paint the inner curved surface of a cylindrical vessel 10m deep. If the cost of painting is at the rate or Rs. 20 per m2,find the

(i) Inner curved surface area of the vessel.

(ii) Radius of the base.

(iii) Capacity of the vessel.

OR

In fig., you see the frame of a lampshade. It is to be covered with a decorative cloth. The frame has a base diameter of 20 cm and height 30 cm. A margin of 2.5cm is to be given for folding it over the top and bottom of the frame. Find how much cloth is required for covering the lampshade.

34. A random survey of the number of children of various age groups playing in a park are found as follows:

Age in years No.of children

1-2 5

2-3 3

3-5 6

5-7 12

7-10 9

10-15 10

15-17 4

Draw a histogram to represent the above data.

Many students lack behind in Science because of lesser practice and lack of interest. Science is the subject which if you try to understand more, more you will like it. So start solving sample paper as per time limit and once you are done with it then try to mark out if any difficulties faced by you in any of the question. This will assist in developing interest in subject like Science. Units covered under this sample paper are Reflection and refraction, human eye, carbon and its compound and periodic classification of metals. Following is the example of CBSE Science sample paper for class X for the year 2011:

UNIT 1: Reflection & Refraction

M.C.Q. (1 mark each)

Q1.A mirror and thin lens each have f= -25cm. The mirror and lens are

A. Both concave

B. Mirror concave , lens convex

C. Mirror convex , lens concave

D. Both convex

Q2: The image formed is always erect. The mirror is

A. Plane

B. Concave

C. Convex

D. Plane or convex

Q3. Light travels faster in

A. Vacuum

B. Glass

C. Air

D. Diamond

Q4. Power of lens of focal length -25 cm is

A. 4D

B. -4D

C. 1/4D

D. -1/4 D

Q5. Angle of incidence of ray passing through center of curvature of mirror is

A. 90

B. 180

C. 0

D. 45

1 Mark Questions

Q6. Define diopter

Q7. What is refraction of light?

2 Mark Questions

Q8. Give any 5 characteristics of image formed by a plane mirror

Q9. What is refractive index of a medium? If refractive index of glass is 1.6 and refractive index of diamond is 2.4. What is the refractive index of diamond with respect to glass?

Q10. Calculate the distance at which an object should be placed in front of a thin convex lens of focal length 10 cm to obtain the virtual image of Double size?

Q11. How can you find rough focal length of a convex lens?

Q12. What type of a mirror is used as a reflector in street lamps? Why?

3 Mark Questions

Q13. Why does an ink dot appear to be raised when viewed through a glass slab? [given aµg = 3/2]

Q14. What are the conditions for no refraction?

5 Mark Questions

Q15. Draw ray diagram to show image formation when object is placed

a. Between C and F

b. At 2 F

In front of a convex lens

Q16. Explain refraction through rectangular glass slab.

What is lateral displacement?

UNIT: Human Eye

M.C.Q. (1 mark each)

Q1. The screen of human eye is

A. Cornea

B. Pupil

C. Iris

D. Retina

Q2. Eye lens is

A. Double convex

B. Double concave

C. Plano convex

D. Plano concave

Q3. For which color is the refractive index of glass maximum

A. red

B. violet

C. green

D. yellow

Q4. When ciliary muscles are relaxed, focal length of eye lens is

A. maximum

B. minimum

C. neither maximum nor minimum

D. cannot say

Q5. Scattering involves

A. reflection

B. refraction

C. change in direction of light

D. diffraction

1 Mark Questions

Q6. What is persistence of vision?

Q7. What is meant by the accommodation eye? How is it achieved?

Q8. What is scattering of light? How is the intensity “I” of scattered light related to wavelength “?” of incident light?

Q9. What is color blindness?

3 Mark Questions

Q10. A myopic person uses specs of power -2D. What is the distance of his far point?

Q11. What causes twinkling of stars? Explain

Q12. Why red color is used in danger signals?

Q13. The near point of a person is 50 cm. What should he do to read a newspaper from a distance of 25 cm?

5 Mark Questions

Q14. What is dispersion of light and why is it caused

Q15. What is hypermetropia? How can it be corrected . Give the focal length of lens which is used for correction

UNIT: Carbon and its Compounds

M.C.Q. (1 mark each)

Q1. Which of these is not saturated hydrocarbon?

A. Cyclohexane

B. Hexane

C. Iso butane

D. Benzene

Q2. Wine contains

A. C6H5OH

B. C2H5OH

C. CH3OH

D. C3H7OH

Q3.Which of the following shows isomerism

A. C2H6

B. C2H4

C. C4H10

D. C3H6

Q4.Which of the salts makes water hard

A. Calcium sulphate

B. Magnesium bicarbonate

C. Calcium chloride

D. Any of the above

Q5.The reaction 2C2H5-OH + 2Na – > 2C2H5ONa+ H2

Suggests that ethanol is

A. Acidic

B. Basic

C. Neutral

D. Amphoteric

2 Mark Questions

Q6. Why can carbon not form ionic compounds easily?

Q7. Explain divalency of O2 and is lone pair

Q8. Give two important differences between diamond and graphite

Q9. What is denatured alcohol?

3 Mark Questions

Q10. What is structural isomerism? Explain with examples

Q11. Which hydrocarbon, saturated or unsaturated are more likely to give a sooty flame and why?

Q12. What is catalytic hydrogenation and in which industry is it used?

Q13. What are the characteristics of a homologus series?

5 Mark Questions

Q14. How can you distinguish between an alcohol and carboxylic acid experimentally?

Q15. What is scum? How is it formed?

Q16. Explain the following terms

1. Esterification

2. Dehydration

Q17.Explain the cleaning action of soap and detergents

UNIT: Periodic classification of Metals

M.C.Q. (1 mark each)

Q1.The atomic mass of first and third element of Dobereiner’s trais are 35.5 and 127, what is the expected atomic mass of the middle element

A. 80

B. 40

C. 137

D. 23

Q2. Which of the following combination of elements belong to the same group?

A. Cu, Ag, Au

B. Li, Be, Al

C. Na, Mg, Al

D. O,S,Cl

Q3. Which of the following is most electronegative?

A. C

B. N

C. O

D. F

Q4.The oxide of which of these elements is not acidic?

A. Cl

B. S

C. N

D. Li

Q5.Highly metallic element will have the configuration

A. 2,8,7

B. 2,8,8,5

C. 2,8,8,1

D. 2,8,2

2 Mark Questions

Q6. What was the main limitation of Dobereiner triad?

Q7. Why is hydrogen called rogue element?

Q8. Why are calcium, strontium and barium called alkaline earth elements?

Q9. Write the name of three isotopes of carbon. How do they differ from one another?

Q10. An element X (2, 8, 3) combine with Cl- , (SO4)2- and (PO4)3- radicals. Identify X and write the formula of the compounds formed with the radicals

3 Mark Questions

Q11. Was Mendeleev idea of leaving gaps in the periodic table justified?

Q12. Out of the elements of 2nd period , which has the smallest and which one has the largest size(Not considering the noble gases)

Q13. Explain the variation in metallic character of elements along 1) a period and 2) in going down a group

Q14. Elements A, B,C,D have electronic configuration as A(2,1) B (2,8) C (2,8,1) and D (2,8,8)

Answer the following:

a. Which element belongs to the same group

b. Which elements belongs to the same period

c. Which belong to 18th group

d. Which out of A& C is more reactive and why

e. Which out of A& B forms more compounds

Max Time: 03 h, Max Marks: 100

General Instructions:

i. All questions are compulsory.

ii. The question paper consists of 29 questions divided in to three sections A, B and C. Section A comprises of 10 questions of 1 mark each, Section B comprises of 12 questions of 4 marks each and Section C comprises of 7 questions of 6 marks each.

iii. All questions in Section A are to be answered in one word, one sentence or as per the exact requirement of the question.

iv. There is no over all choice. However, internal choice has been provided in 4 questions of four marks each and 3 questions of six marks each. You have to attempt only one of the alternatives in all such questions.

v. Use of calculators is not permitted

Section – A

1. Find the value of the trigonometric function:

2. A function f is defined by Find

3. Find the coefficient of in the expansion of .

4. Find n, if

5. Solve:

6. Find the equation of the parabola with vertex at

7. Express the complex number in ( x+ i y) form.

8. Find the 12th term of a G.P. whose 8th term is 192 and the common ratio is 2.

9. If E and F are events such that find

10. Evaluate:

Section – B

11. If

Verify that

-1-

12. If then find the least integral value of m.

(OR) Express in the form of

13. Using Binomial Theorem, prove that:

14. If where x and y both lie in II quadrant, find the value

(OR) Prove that:

15. Prove the following by using the Principle of Mathematical Induction

16. In how many ways can 5 persons travel in a car, 2 including driver in the front

seat and 3 in the back seat, if 2 particular persons out of the 5 do not know

driving?

17. Prove by PMI that “ n (n +1) (n + 5) is always a multiple of 3 for every natural number n”.

18. Find the equation of the hyperbola with vertices at

(OR) Find the coordinates of the point which divides the line segment joining the points

19. Find the equation of the line making equal intercepts on the axes and making an angle 135° with X axis.

(OR) Find the coordinates of the foci, the vertices, the length of major axis and eccentricity of the ellipse

20. State the Converse and Contra positive of the below atatements

i) A quadrilateral is a parallelogram only if its opposite sides are equal

ii) A cadet joins NDA if he clear the SSBinterview and Medical test

21. If the sum of n terms of a AP is 3n2 + 5n and its mth term is 164, find the value of m.

22. In a game a fair die is thrown. Game is won if multiple of 3 appears. Otherwise the die is thrown again. Write the sample space with atleast 12 outcomes.

Section – C

23. Solve the following system of inequations graphically

24. If the terms in the expansion of are equal, then find the value of x.

(OR) If a, b, c are in A.P. ; b, c, d are in G.P. and are in A.P. , prove that a, c, e are in G.P.

25. Find the area of the triangle formed by the midpoints of sides of the triangle whose vertices are

(OR) Find the equation of the line through the intersection of lines and whose slope is 5.

26. Calculate the mean deviation about mean for the following data:

Class 0 – 10 10 – 20 20 – 30 30 – 40 40 – 50 50 – 60

Frequency 6 7 15 16 4 2

27. Compute the derivative of tan x using the first principle

28. Find the general solution of the equations

i) Sec 2 2x = 1 – tan 2x

ii) Sin x + sin 3x + sin 5x = 0

(OR) If tan x = , where x is in III quadrant, find te value of , and

29.i) In a survey of 600 cadets in a school, 150 students were found to be interested in joining IAF and 125 interested in joining only IN. Find how many students were interested neither in IAF nor in IN?

ii) Show by Venn diagram that, A – B = A ? B’