SilverZone STEM Sample Paper Class 6

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Science
1 Look at the activity carefully. Which statement is incorrect with respect to the activity?

Kettle con­taining salt water
Beaker

A. In this activity salt is getting separated from water.
B. This activity involves the process of condensation and evaporation.
C. This activity shows that soluble substances cannot be separated from water by the process of
evaporation and condensation.
D. None of these

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2 Raj prepares two electric circuits as shown below then allow current to pass through them. He notices
bulb of only one of the circuits is glowing. Bulb of which circuit is glowing and what is most likely
reason for the other circuit’s bulb to not to glow?

2.

Cardboard box Gold clip

A. Bulb of circuit 1 is glowing but in circuit 2 he fitted switch in wrong way. So, bulb of circuit 2 is
not glowing
B. Bulb of circuit 2 is glowing but circuit 1 contains a piece of cardboard box which is insulator. So,
bulb of circuit 1 is not glowing.
C. Bulb of circuit 2 is glowing. He did not connect circuit 1 with switch. So, its bulb is not glowing.
D. Bulb of circuit 2 is glowing and the clear reason for bulb of circuit 1 to not to glow is that it is
fused.

3 Two plane mirrors M and N have been placed parallelly and a ray of light is allowed to reflect by them
as shown below. Sum of angles X, Y and Z in the following figure is:

N
60° x

30° y
N
N
z

M

A. 60° B. 90°
C. 120° D. 160°

4 Which combination of statements is correct?

i. We can find speed of a moving object, if total traveled distance by it and total time taken is provided.
ii. If an object is moving with speed of 90 km/h, it means it is covering the distance of 90 metres in every
second.
iii. Speed of a moving object cannot exceeds 1000 km/h.
iv. Speed of two objects cannot be same at any point of time.
A. i , ii and iv only B. ii, iii and iv only
C. i and iv only D. i only

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Technology & Engineering
5 Which one of the following humanoid robots is displayed in the Miraikan museum in Tokyo.

A. B.

Big Dog Asimo

C. D.

ROOMBA
Alexa

6 
A home equipped with lighting, heating and electronic devices that can be controlled remotely by
smartphone or computer is called a __________.

A. Smart Home B. Intelligent Home
C. Sustainable Home D. Sensor Home

7 Which letter won’t print while running the below pseudocode?

for letter in "coding":
if letter == "i":
break
print(letter)
print("End")

A. ‘d’ B. ‘c’
C. ‘n’ D. ‘o’

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8 In the figure given below, A is B’s daughter. B is C’s mother. D is C’s brother. How is D related to A?

B

D
D A
C
C

A. Son B. Uncle
C. Brother D. Father

Mathematics
9 A mobile number having 10 digits. Only first four digits of this number are repeated and are 9999. If
digit at unit’s place is equal to the sum of the digits at thousand and ten thousand’s places. The digit at
ten’s place is twice the digit at thousands place. The digit at thousand’s place is the smallest composite
number. The digit at lac’s place is the smallest prime number. No digit of the number has 5. Find the
mobile number.

A. 9999634287 B. 9999234687
C. 9999634782 D. 9999234786

10 Harry and Jennifer went to Laddakh. On Monday they recorded minimum temperature –4°C and on
Wednesday they recorded minimum temperature –1°C. Based on this information choose the statement
which is true?

A. Monday was hotter than Wednesday.
B. Temperature difference of Monday and Wednesday was –3°C.
C. Wednesday was cooler than Monday.
D. None of these

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11 Ramesh has a field with perimeter 528 ft. He makes 56 identical squares from this field as shown below:

If he planted saplings in 20 such squares (shown as shaded part) and then he leaves rest portion of the
field vacant. Find the area of unshaded portion.
A. 432 sq ft B. 5184 sq ft
C. 4320 sq ft D. 528 sq ft

12 The price of wheat is increased by 25%. If the expenditure on wheat remains same as earlier then ratio
of the reduction in the consumption and the initial consumption respectively will be __________

A. 2:3 B. 1 : 4
C. 3:4 D. 1 : 5

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

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