SilverZone STEM Sample Paper Class 8

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Science
1 Which combination of statements is correct?

i. The strength of a force is usually expressed by its magnitude.
ii. The same force can produce different pressure on objects having different surface area.
iii. If a force of 15 N is applied to 2 m2 area of an object, 7.5 pascal pressure would be produced.
iv. Liquids and gases cannot produce pressure.
A. i, ii and iii B. ii, iii and iv
C. i, ii and iv D. ii and iv

2 Suppose two planets X and Y are discovered in our solar system. Planets X and Y take 37 and 267 days
respectively to complete one revolution around the Sun. If speed of revolution of both the planets is
same, which planet is closure to the Sun?

A. Planet X
B. Planet Y
C. Both planets are equally distant from the Sun
D. None of these

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3 If the given pendulum completes 80 oscillations in 5 seconds, how long does bob take to go from position
A to C?

A C
Extreme Extreme
position B position
Mean
position

A. 0.0625 s B. 0.03125 s
C. 0.5 s D. 1.02153 s

4 Two forces A and B are applied on an object. Force A is pulling the object in north direction while force
B is pulling the object in south direction. A is bigger than B. The net force on the object is:

A. A + B acting in the direction of A B. A – B acting in the direction of A
C. A + B acting in the direction of B D. A – B acting in the direction of B

Technology & Engineering
5 Which of these is not a current application of AI?

A. Classifying rock samples to identify best places to drill for oil.
B. Self-driving vehicles utilizing computer vision to navigate around objects.
C. Making precise patient diagnosis and prescribing independent treatment
D. Collaborative robots helping humans lift heavy containers.

6 Based on which of the following parameter, Artificial Intelligence is categorized?

A. Based on functionally only B. Based on capabilities only
C. Based on capabilities and functionally D. It is not categorized

7 Which of the following defines a variable in Python?

A. var name=”Steve” B. string name=”Steve”
C. name=”Steve” D. All of the above

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8 If a mirror is placed on the northern side then which of the answer figures is the right image of the
given figure.

A. B.

C. D.

Mathematics
9 John gifted a diamond pendent of worth `240,000 to his wife. Due to some mis-happening it breaks into
two pieces. The weight of these two pieces are in the ratio of 12 : 13. If the price of the diamond is
proportional to the square of its weight, then what will be the loss of John due to its breaking?

A. `115200 B. `116420
C. `119808 D. `120216

10 Rahul measures the sides of a rectangular plot ABCD shown below.
A B

E

D C
He finds that AB + BC + CD = 42 m. He also joins DE where E is the mid point of BC. If the length of DE measured by
him is 15 m then what will be the area of this plot?
A. 244 m2 B. 196 m2
C. 216 m2 D. None of these

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11 Jessica types the numbers shown below:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...........

123 ...

What will be 6000th digit typed by her?
A. 1 B. 2
C. 3 D. None of these

12 A cube of 16 cm is painted on all its sides as shown below. If it is cut into 1 cubic centimeter cubes, how
many such 1 cubic centimeter cubes will have exactly one of their sides painted?
16cm
16cm

16cm

A. 1176 B. 1228
C. 1350 D. 1420

ANSWERS
1. (A) 2. (A) 3. (B) 4. (B) 5. (C) 6. (C)
7. (C) 8. (B) 9. (C) 10. (C) 11. (D) 12. (A)

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