SilverZone STEM Sample Paper Class 10

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Science
1 Which statement is correct with respect to the figure given below?

N S

A. The concentric circles are representing the magnetic filed lines near the wire.
B. A circular loop does not produce magnetic filed lines at the centre of the loop.
C. Right hand thumb rule cannot be used to find the direction of magnetic filed lines produced by a
circular loop.
D. None of these

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2 Find out the reading of ammeter and voltmeter in the circuit given below.

V

A
1Ω 2Ω 3Ω 4Ω

12V
A. Ammeter reading = 1.2 A,
Voltmeter reading = 1V
B. Ammeter reading = 1 A,
Voltmeter reading = 0.5V
C. Ammeter reading = 1.2 A,
Voltmeter reading = 1.2V
D. Ammeter reading = 3 A,
Voltmeter reading = 5V

3 Look at the following figure carefully and choose the correct option.

Sulfuric Acid Potassium hydroxide

I II

Distiled Water Magnesium hydroxide

III IV
A. pH of I is greater than that of II and III
B. pH of IV is less than that of I and III
C. pH of I is less than that of III and IV
D. pH of III is greater than that of II and IV

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4 Which combination of terms is correct for P, Q, R, S and T to fill in the blanks?

Electronic configuration of some elements
Element Number of electrons in shells
K L M N
Sodium 2 8 1

Carbon 2 P

Q 2 8 R

Aluminium 2 S 3

Potassium 2 8 8 T

A. P→8, Q→Argon, R→8, S→8, T→2 B. P→7, Q→Phosphorus, R→5, S→8, T→1
C. P→4, Q→Argon, R→8, S→8, T→1 D. P→4, Q→Argon, R→7, S→8, T→2

Technology & Engineering
5 Amazon Alexa is a voice-controlled digital or virtual assistant software that takes voice commands to
make to-do lists, place online orders, schedule reminders and answer queries through internet searches.
Alexa uses_________ .

A. Decision Tree B. NLP
C. Classification D. Data Visualization

6 Life support systems and ventilators are equipped with multiple sensors that are designed to monitor and
observe body signals in order to activate the device’s features. For example, as soon as it senses a drop in
the level of oxygen in a person’s body, it turns on the artificial oxygen supply. Ventilators are an example
of:

A. Machine with emotional intelligence B. Artificial general intelligence
C. Automated machine D. Computer vision technology

7 What would the following code do?

Newlist = [1,2,3,5]
Newlist.remove(2)
print(Newlist)

A. [1,2,5] B. [1,3,5]
C. [1,5] D. [3,5]

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8 A person started walking towards West and covered a distance of 15 m, he turned right and walked
10 m. Again he turned right and walked 5 m and in the end, he turned left and walked 15 m. In which
direction this person is now?

A. North B. South
C. East D. West

Mathematics
9 Sahil writes integers 1 to 60 on a blackboard. He then does following operation and repeats it 59 times.
In each repetition, any two numbers say m and n, currently on the blackboard are erased by him and a new number
m + n – 2 is written.
What will be the number he get at last?

1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60

A. 1771 B. 1712
C. 1713 D. 1770

10 A city has a park shaped as a right angled triangle. The length of the longest side of this triangular
park is 52m. The Mayor of the city wants to construct three paths from the corner point opposite to the
longest side such that these three paths divide the longest side in to four equal segments. Determine the
numerical value of the sum of the squares of the lengths of these three paths. [Assuming that these
three paths have no width.]

A. 2400 B. 2556
C. 2476 D. 2366

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11 The lower window of a house is at a height of 3 m above the ground and its upper window is 2 m vertically
above the lower window. At certain instant the angles of elevation of a balloon from these windows are
observed to be 60°and 30° respectively. Find the height of the balloon from above the ground.

A. 6m B. 8 m
C. 9m D. 10 m

12 In a X-Y-plane, there are four points P,Q, R and S lie on a straight line such that PQ = QR = RS = 4 metres.
A sugar particle is placed at point S. An ant at P wants to reach at the sugar particle at S, but there are
insect repellents kept at points Q and R. The ant would not go within 4 metres of any insect repellent.
Find the minimum possible distance (in metres) the ant must traverse to reach the sugar particle.

A. 4+π B. 4 ( π + 1)
C. 8+π D. 8 ( π + 1)

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

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