Class X SA-II SCIENCE SAMPLE PAPER 2016

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Special Individual A�en�on :One on one classes or doubt classes apart from the regular classes give individual a�en�on to each student. The doubt clearing sessions which will give the student the right push to their goal.

Faculty :This is one of the most important considera�ons while deciding about a coaching centre. We believe good teachers have the ability to transform studentsen�rely from non‐thinkers to intense‐thinkers.It is your responsibility to find out whether the Ins�tute does have Strong Pool of Full �me Faculty Members or not. This is important in case a Faculty leaves the Ins�tute midway so that Ins�tute is capable of filling that vacancy with a Faculty of same Calibre & Exper�se, eventuallysafeguarding your future.

Result :So many coaching ins�tutes show their results but don’t tell about the selec�on ra�o, how many students were enrolled for a course, like, say IIT‐JEE or AIPMT, how many were successful, what percentage of students secured ranked.

Student Teacher Ra�o : Number of students per class is also a factor, the less number of students for class the more is the a�en�on by the teacher on the students and also by the students towards teaching. So check out for number of students the ins�tute divides for a single class.

ADMISSION CUM SCHOLARSHIP TEST

2Oth March,3rd & 10th April 2016For students moving in class 8th,9th, 10th,11th & 12th

Our results reflects our excellence and credibility. Apexian selected in 68%IIT‐Main 56% IIT‐Advanced and in . 100% students got more than 80% marks in their Board Exam, Apex topper scored 96% marks in Board Exam.

APEX ,panel of teaching staff comprises of IITians, NITians, Doctors . APEX follows a very Strong, Systema�c & Objec�ve Selec�on Process. Apex conduct demo classes and mock sessions for students to help in making correct and wise decisions.

At APEX the Student‐Teacher Ra�o is less than 25:1,even at the peak �me. This facilitates proper Student‐Faculty interac�on. Our faculty is always willing to clear doubts of Students even individually, if required.

Apex consider doubts as the stepping stones towards understanding. each �me a modules gets completed its is followed by a doubt class. A doubt classon any topic can be demanded by the student, throughout the year round.

Tes�ng & Feedback system The only parameter to judge one's posi�on in the race is by analyzing the performance in tests. If students are to benefit from feedback,itmust not only be �mely and frequent, but also useful for improving performance byaddressing three areas: what students did well, what students need to improve on,and how to make this improvement.

At Apex, aspirants are exposed through weekly test and all India test series.The weekly tests ensure that aspirants keep their pace with content coverageand keep iden�fying their week areas. Regular tests are conducted and resultsof tests are also sent to aspirants and parents through SMS.

Some questions to ask before choosing a coaching institute

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MOCK TEST PAPERSCIENCE

(class10th)

Boost your IIT-JEE / AIPMT Preparation

1

SECTION A

1. How many dot structural isomers can you draw for pentane? [1]

2. Why are the danger signals installed at the top of tall buildings red in colour. [1]

3. What will happen if deer is missing in the food chain given below? [1]

Grass → Deer → Tiger

4. Name an ecofriendly fuel. [1]

5. Why do you think, the noble gases are placed in a separate group? [2]

6. Name two elements you would expect to show chemical reactions similar to

magnesium. What is the basis of your choice? [2]

7. How will an organism be benefited if it reproduces through spores? [2]

8. How does the embryo get nourishment inside the mother’s body? [2]

9. (i) Define principal focus of a concave mirror. [2]

(ii) The figure shows a ray of light as it travels from medium A to medium B. What

is the refractive index of medium B relative to medium A?

45°

45°

30°

60°

Medium B

Medium A

10. The far point of a myopic person is 80 cm in front of the eye. What is the nature and

the power of lens required to enable him to see very distant objects clearly? [2]

11. Why does the sky appear dark, instead of blue to an astronaut? [2]

12. What are fossil fuels. Give two examples. [2]

13. What forces work against an equitable distribution of our resources? [2]

14. (i) What is a ‘homologous series’ of substances? [3]

(ii) In an organic compound, which parts largely determine its physical and chemical

properties?

Instructions : Same as in CBSE Sample Question Paper for SA-2 (Term II)

Maximum Marks : 80 Maximum Time : 3hours

SCIENCE X TERM-II

MODEL TEST PAPER – 2 (Unsolved)(Based on the latest CBSE Sample Question Paper released by the CBSE, New Delhi)

APEX INSTITUTE FOR IIT-JEE / MEDICAL / NTSE Head office: 62 Nitikhand-III, Indirapuram; | Contact: 0120-4331180, 9990495952 |

Web: www.apexiit.co.in/

2

(iii) Name the following compound:

H — C — C — C — H

—

H

—

H

—H

—

H

———

O

15. How and why does the atomic size vary as you go : [3]

(i) from left to right along a period?

(ii) down a group?

16. (i) When does ovulation occur during the menstrual cycle in a normal healthy

female? [3]

(ii) Draw a labelled diagram to show the reproductive system of a human female.

17. How do Mendel’s experiments show that traits are inherited independently? [3]

18. What factors could lead to the rise of a new species? [3]

19. Define the following terms : [3]

(i) Evolution (ii) Sex chromosome (iii) Menstrual cycle

20. A convex lens has a focal length of 30 cm. Calculate at what distance should the object

be placed from the lens so that it forms an image at 60 cm on the other side of the

lens. Find the magnification produced by the lens in this case. [3]

21. Why does a light ray incident on a rectangular glass slab immersed in any medium

emerges parallel to itself? Explain using a diagram. [3]

22. Draw a ray diagram showing the dispersion through a prism when a narrow beam of

white light is incident on one of its refracting surfaces. Also indicate the order of the

colours of the spectrum obtained. [3]

23. (a) What is fermentation? [5]

(b) What role is played by yeast in the conversion of canesugar (C12

H22

O11

) to

ethanol?

(c) How may the following be obtained from pure ethanol? Express with the help of

chemical equations. (i) Sodium ethoxide (ii) Ethyl ethanoate (iii) Ethanal.

OR

(a) The structural formula of an ester is : [5]

H — C — C — O —C — C — H

—

H

———

O

—

H

—

H

—

H

—

H

—

HWrite the structural formulae of the corresponding alcohol and the acid.

(b) (i) Mention the experimental conditions involved in obtaining ethene from

ethanol.

(ii) Write the chemical equation for the above reaction.

(c) Explain the mechanism of the cleaning action of soaps.



3

24. What are the different methods of contraception. Discuss in brief. [5]

OR

(a) Illustrate the following with the help of suitable diagrams : [5]

(i) Spore fermentation in Rhizopus.

(ii) Multiple fission in Plasmodium.

(b) Describe the process of fertilisation in plants.

25. An object 1 cm high produces a real image 1.5 cm high, when placed at a distance of

15 cm from a concave mirror. Calculate : (i) the position of the image, (ii) focal length

of the concave mirror. [5]

OR

(i) A pencil when dipped in water in a glass tumbler appears to be bent at the

interface of air and water. Will the pencil appear to be bent to the same extent,

if instead of water we use liquids like kerosene or turpentine. Support your

answer with reason. [5]

(ii) How is the refractive index of a medium related to the speed of light? Obtain an

expression for refractive index of a medium with respect to another in terms of

speed of light in these two media?

SECTION B

26. Solutions of ferrous sulphate, zinc sulphate, copper sulphate and aluminium sulphate

were separately taken in four test tubes and some iron nails were placed in each of the

solutions. After few minutes, it would be observed that the colour of : [1]

(a) all the four solutions changed

(b) solutions of zinc sulphate, copper sulphate and aluminium sulphate changed and

that of ferrous sulphate did not change.

(c) solutions of zinc sulphate and aluminium sulphate only changed.

(d) copper sulphate solution only changed.

27. A thin plate of zinc metal is placed in a beaker containing aqueous ferrous sulphate

solution. The zinc plate is taken out after 15 minutes. The colour of iron sulphate

changes to : [1]

(a) deep yellow (b) deep green (c) light blue (d) colourless

28. Four students observed the colour and odour of acetic acid and its reaction with

sodium hydrogen carbonate. They tabulated their observations as given below : [1]

Student Colour of acetic Odour of acetic Action with sodium

acid acid hydrogen carbonate

A blue fruity gas evolves without bubbles

B colourless smell of vinegar effervescence

C light green odourless gas evolves without bubbles

D light brown rotten egg effervescence



4

The correct set of observation is that of student :

(a) A (b) B (c) C (d) D

29. Ethanoic acid reacts with sodium bicarbonate to form : [1]

(a) sodium ethanoate and water (b) sodium ethanoate and carbon dioxide

(c) carbon dioxide and water (d) sodium ethanoate, water and carbon dioxide30. Acetic acid : [1]

(a) is neutral towards litmus (b) turns blue litmus red

(c) turns red litmus blue (d) none of these

31. Parallel rays, from a distant tree, incident on the device X, form its distinct image ona screen as shown. The diagram correctly showing the image of the tree on the screen,is diagram : [1]

X

A

B

X

(a) A and the device X is a convex lens

(b) A and the device X is a concave mirror.

(c) B and the device X is a convex lens

(d) B and the device X is a concave mirror.

32. A pencil is held close to a spherical mirror. It is found that the image formed in the mirroris virtual and enlarged. The spherical mirror is : [1]

(a) convex in nature (b) concave in nature

(c) partly convex and partly concave in nature (d) none of these

33. Parallel rays, from the top of a distant tree, incident on a concave mirror, form an

image on the screen. [1]

A B C D



5

The diagram correctly showing the image of the tree on the screen is :

(a) A (b) B (c) C (d) D

34. A student traces the path of a ray of light passing through a rectangular glass slab. [1]

A B C D

For measuring the angle of incidence, he must position the protector in the manner

shown in figure :

(a) A (b) B (c) C (d) D

35. A student performs the experiment on tracing the path of a ray of light passing through

a rectangular glass slab for different angles of incidence. He measures the angle of

incidence ∠ i, angle of refraction ∠ r and angle of emergence ∠ e for all his

observations. He would find that in all cases : [1]

(a) ∠ i is more than ∠ r but (nearly) equal to ∠ e

(b) ∠ i is less than ∠ r but (nearly) equal to ∠ e

(c) ∠ i is more than ∠ e but (nearly) equal to ∠ r

(d) ∠ i is less than ∠ e but (nearly) equal to ∠ r

36. The process represented in the diagram below is : [1]

(a) formation of spores in Amoeba

(b) formation of bud taking place in Amoeba

(c) identical gametes being formed in Amoeba

(d) formation of daughter cells in Amoeba

37. The budding in yeast is illustrated by the diagram : [1]

(a) A (b) B (c) C (d) D



6

38. A chain of yeast cells is formed when : [1]

(a) yeast cells do not separate after budding

(b) yeast cells are infected by a virus

(c) yeast cells stick to each other due to the presence of mucus

(d) yeast cells suffer from a disease

39. While performing the experiment with raisins to determine the percentage of water

absorbed by them, a student recorded the following data : [1]

Weight of the water in the beaker = 50 g

Weight of raisins before soaking = 20 g

Weight of raisins after soaking for one hour = 30 g

Weight of water left in the beaker after the experiment was over = 40 g

The percentage of water absorbed by raisins is :

(a) 10 (b) 20 (c) 45 (d) 50

40. A student put five raisins each in two beakers A and B. Beaker A contained 50 ml of

distilled water and beaker B had 50 ml of saturated sugar solution. After sometime, the

student would observe that : [1]

(a) raisins in beaker A were more swollen than those in beaker B.

(b) raisins in beaker B were more swollen than those in beaker A.

(c) raisins in both beakers A and B were equally swollen.

(d) raisins in beaker A did not swell up at all.

41. A student soaked 10g raisins in 50 ml of distilled water in two beakers A and B each.

She maintained beaker A at 25°C and beaker B at 50°C. After an hour, the percentage

of water absorbed will be [1]

(a) the same in both A and B (b) more in A than in B

(c) more in B than in A (d) exactly twice as much in B as in A

ANSWERS

10. –1.25D 20. – 60 cm, –1 25. – 22.5 cm, –9 cm 26. (d)

27. (d) 28. (b) 29. (d) 30. (b) 31. (a) 32. (b) 33. (b) 34. (b)

35. (a) 36. (d) 37. (b) 38. (a) 39. (d) 40. (a) 41. (c)



Prakhar GoelStudent of APEX

One year classroom Program.

He is studying MBBS in Maulana Azad Medical college Delhi.

Siddhant RathoreCBSE : 91.6%Student of APEX

�ree year classroom Program.He is studying Mechanical Engineering in BITS Goa.

Dhwani Jain

Student of APEX �ree year classroom Program.She is studying Chemical Engineering in NUS Singapore.

Selected in NUSNational University of Singapore: 1st Rank in Asia

AIPMT AIR 427(GE)

Prerna Kashyap CBSE : 96%

Student of APEX Two year classroom Program.

She is studying in NIT Kurukshetra.

IIT-Main AIR 521(GE)

Apeksha GargCBSE : 96%

Student of APEX One year classroom Program.

Vibhav SinghCBSE : 96%Student of APEX


M-95, C-98, P-95 B-98, C-97, P-95

School : Cambridge Indirapuram

School : Amity Noida

Student of APEX Four year classroom Program.

She is studying in Delhi Technical Univercity(DTU) .

IIT-Main Score: 186

School : DPS Noida

School : Ryan Noida

STAR PERFORMERS OF THE YEAR

Arindham Roy CBSE : 95%

Student of APEX Two year classroom Program.He is studying in NIT Patna.

IIT-Main Score : 158

School : Cambridge Indirapuram

BITS SCORE: 329

Sharvi TomarCBSE : 95.4%

Shubham MukharjeeStudent of APEX


He is studying in IIT Guahati.

IIT(Adv.)AIR 1823(GE)

Shaurya Tomar CBSE : 93.2%Student of APEX

Four year classroom Program.He is studying in Thapar Institute Patiyala.

IIT-Main Score : 149

School : DPS Noida

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Four year classroom Program.He is studying in Government Engineering College Bilaspur.

IIT-Main Score :158

School : KV Noida

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Selections in IIT-Advanced56% 60% Selections in AIPMT

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Student of APEX Twor year classroom Program.

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Four year classroom Program.

M-95, C-96, P-95 M-95, C-95, P-91

School : DPS Noida School : Modern school Noida

Shaurya Tomar CBSE : 93.2%Student of APEX

Four year classroom Program.

M-95, C-97, P-92

School : DPS Noida

Pranjal SinghCBSE : 90.4%


AreeshaCBSE : 91%

School : Genesis global school

DeeptiCBSE : 88%

AarushiCBSE : 88%

School : St. Teresa Indirapuram School : Ralli Int. school School : St. Francis Indirapuram

Student of APEX One year classroom Program.

Student of APEX Four year classroom Program.


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96%marks in Board Exam.

100% students got more than 85% marks in

Board Exam.

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Class X SA-II SCIENCE SAMPLE PAPER 2016

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