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.

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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.

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MOCK TEST PAPERSCIENCE

(class10th)

Boost your IIT-JEE / AIPMT Preparation

1

SECTION A

1. Name the compound formed when ethanol is warmed with ethanoic acid in the

presence of a few drops of conc. H2SO4. [1]

2. What happens to the image distance in the eye when we increase the distance of an

object from the eye? [1]

3. Construct an aquatic food chain showing four trophic levels. [1]

4. Where is the ozone layer located? [1]

5. Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15

of the Periodic Table. Write the electronic configuration of these elements. Which of

these will be more electronegative? Why? [2]

6. State two main properties of elements on which Mendeleev’s periodic classification

was based. Why could no fixed position be assigned to hydrogen in his periodic table.

[2]

7. Mention two functions of the human ovary. [2]

8. Why is DNA copying an essential part of the process of reproduction? [2]

9. The image of an object is formed on itself when placed at a distance of 30 cm from

a concave mirror. What is the focal length of the concave mirror? [2]

10. Draw a neat labelled diagram showing the course of a ray of light through an

equilateral glass prism and show clearly the angle of incidence and angle of deviation.

[2]

11. Why is the sunlight reaching the earth yellowish? [2]

12. Give two changes which we can adopt in our daily life or habits to reduce the use of

fossil fuel. [2]

13. Why must we conserve our forests? List any two causes for deforestation taking place.

[2]

14. How were the following defects of original Mendeleev’s Periodic Table resolved in the

modified Mendeleev’s Period Table? [3]

(i) Problem of anomalous pairs.

(ii) Position of rare earths

(iii) Position of isotopes.

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

Maximum Marks : 80 Maximum Time : 3 hours

SCIENCE X TERM-II

MODEL TEST PAPER – 1 (Unsolved)

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Web: www.apexiit.co.in/

2

15. Name the reaction which is commonly used in the conversion of vegetable oils to fats.

Explain the reaction involved in detail. [3]

16. Draw a diagram of a flower to show its male and female reproductive parts. Label on

it :

(a) ovary (b) anther (c) filament (d) stigma [3]

17. How is the equal genetic contribution of male and female parents ensured in the

progeny? [3]

18. Explain the importance of fossils in deciding evolutionary relationships. [3]

19. A man with blood group A marries a woman with blood group O and their daughter

has blood group O. Is this information enought to tell you which of the traits — blood

group A or O — is dominant? Why or why not? [3]

20. A concave lens has a focal length 15 cm. At what distance should an object 10 cm long

be placed so that it forms an image 10 cm from the lens? Find the nature and size of

the image formed. [3]

21. Draw a ray diagram showing the path of rays of light when it enters with oblique

incidence. [3]

(i) from air into water

(ii) from water into air

22. Make a diagram to show how hypermetropia is corrected. The near point of a

hypermetropic eye is 1m. What is the power of lens required to correct this defect?

Assume that the near point of the normal eye is 25 cm. [3]

23. Elements A B C D [5]

Electronic configuration 1 2, 1 2, 4 2, 8, 7

The table above shows the electronic configuration of elements from A to D. By

drawing dot diagrams show the formation of compounds between :

(i) A and B (ii) A and D (iii) A and C (iv) B and C

(v) B and D (vi) C and D

OR

(i) Define combustion. [5]

(ii) Why is the flame of an unsaturated hydrocarbon sooty?

(iii) Give a reaction other than oxidation which is a characteristic of saturated

hydrocarbons.

(iv) Which of the following hydrocarbons undergo addition reactions? Support your

answer by a chemical equation.

C2H

6, C

3H

8, C

2H

2 and CH

4

24. (i) Only through labelled diagrammatic representations, represent the process of

budding as seen in Hydra. [5]



3

(ii) What is vegetative propagation? Classify giving suitable examples.

OR

(i) What is the structure of the embryo sac? [5]

(ii) What is the importance of the menstrual cycle?

25. (i) A beam of light is incident through the holes on side A and emerges out of the

hole on the other face of the box as shown in the figure. [5]

10987654321

A B1

23456789

10

Box

What type of lens is present inside the box?

(ii) Two thin lenses of power + 2.5 D and –1.5 D are placed in contact with each

other. Calculate : (a) power of the combination, (b) focal length of the

combination.

OR

(i) One half of a convex lens is covered with a black paper. Will this lens produce a

complete image of the object? Verify your answer and explain your observation.

(ii) P1 and P

2 are the power of two thin lenses. What is the power P when both lenses

are placed in contact with one another? [5]

SECTION B

26. A bright nail is placed in a beaker containing aqueous copper sulphate solution.When

the iron nail is taken out of copper sulphate solution after 15 minutes, its surface is

coated with : [1]

(a) reddish deposit (b) greenish deposit (c) black deposit (d) white deposit

27. Zinc granules were added to zinc sulphate, copper sulphate, aluminum sulphate and

iron sulphate solutions as shown below. You would observe the deposition of metal on

zinc granules in the beakers :

I II III IV

(a) I and III (b) II and IV (c) I and II (d) III and IV



4

28. Ethanoic acid reacts with sodium bicarbonate : [1]

(a) vigorously with lot of effervescence (b) slowly

(c) at a moderate rate without effervescence (d) none of these

29. 5 ml each of acetic acid and water are mixed together and shaken well.: [1]

The resulting mixture would appear as in :

(a) I (b) II (c) III (d) IV

30. The odour of acetic acid resembles that of : [1]

(a) rose (b) burning plastic (c) vinegar (d) kerosene

31. A student determines the focal length of a device X,

by focussing the image of a far off object on the

screen positioned as shown in the figure below.

The device X is a :

(a) Convex lens (b) Concave lens

(c) Convex mirror (d) Concave mirror

32. The focal length of the concave mirror in the

experimental set up, shown below, equals :

(a) 10.3 cm (b) 11.0 cm

(c) 11.7 cm (d) 12.2 cm

33. A student performs an experiment on finding

the focal length of a convex lens by keeping

a lighted candle on one end of a laboratory2 4 6 8 10 12 14 16 18

Screen

X

[1]

[1]

[1]



5

table, a screen on its other end and the lens between them as shown in the figure. The

positions of the three are adjusted to get a sharp image of the candle flame on the

screen. [1]

If now the candle flame were to be replaced by a distant lamp on a far away electric

pole, the student would be able to get a sharp image of this distant lamp on the screen

by moving :

(a) the screen in the direction of the lens or the

lens in the direction of the screen.

(b) the screen in the direction of the lens or the

lens away from the screen.

(c) the screen away from the lens or the lens in

the direction of the screen.

(d) neither the screen nor the lens.

34. Which one of the following is the best set-up for tracing the path of a ray of light througha rectangular glass slab? [1]

(a) I (b) II (c) III (d) IV

35. A ray of light travelling through medium A enters medium B, such that it bends awayfrom the normal at the surface of separation. From this observation, we can say thatmedium B is : [1]

(a) denser than medium A (b) rarer than medium A

(c) of the same optical density as A (d) none of these

36. The diagram given alongside illustrates [1]

(a) bud formation in yeast

(b) binary fission in Amoeba

(c) formation of daughter cells in yeast

(d) pseudopodia formation in Amoeba

37. A student is given a permanent slide showing binary fission in Amoeba. Following are

the steps in focussing the object under the microscope : [1]

(i) Place the slide on the stage; look through the eye piece and adjust the mirror and

diaphragm to get even illumination.

Candle (C)Lens (L)

Screen (S)



6

(ii) Look through the eye piece and raise the objective using coarse adjustment until

the object is focused.

(iii) Make the focus sharp with the help of fine adjustment.

(iv) Look through the eye piece and move the slide until the object is visible.

The proper sequence of steps is

(a) (i), (iii), (iv), (ii) (b) (ii), (iii), (iv), (i)

(c) (iv), (iii), (ii), (i) (d) (i), (iv), (ii), (iii)

38. Following are the sketches made by some students. [1]

The sketch not illustrative of budding in yeast is

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

39. A student soaked 5 grams of raisins in 25 ml of distilled water in each of the two

beakers A and B. Beaker A was maintained at 25ºC and beaker B at 50ºC. After one

hour, the student observed that the water absorbed by the raisins was : [1]

(a) same in case of A and B (b) less in case of A than in B

(c) exactly double in A, of that in B (d) exactly four times in A, of that in B

40. When kept in 10% sugar solution raisins swell up due to : [1]

(a) endosmosis (b) exosmosis (c) plasmolysis (d) diffusion

41. If ‘x’ is the initial weight of raisins and ‘y’ is the final weight (after soaking),

percentage of water absorbed by the raisins is given by : [1]

(a) 100x y

x

−× (b) 100

y x

y

−× (c) 100

x y

y

−

× (d) 100y x

x

−×

ANSWERS

9. 15 cm 20. (i) –30 cm, 3.33 cm 22. + 3D 25. (a) + 1.0 D (b) 1 m

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

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



Prakhar GoelStudent of APEX

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

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Student of APEX Two year classroom Program.

She is studying in NIT Kurukshetra.

IIT-Main AIR 521(GE)

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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

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Student of APEX Four year classroom Program.

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Shubham MukharjeeStudent of APEX


He is studying in IIT Guahati.

IIT(Adv.)AIR 1823(GE)

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

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Four year classroom Program.

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Four year classroom Program.

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class x sa-ii science sample paper 2016

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