Class 8 Maths Mcqs

Q:

Compare volumes of cube A having side 2 × 10² m and cube B having side 1 × 10¹ m.

A) V₁ = 800V₂ B) V₁ = 8000V₂
C) V₂ = 8000V₁ D) V₂ = 800V₁
 
Answer & Explanation Answer: B) V₁ = 8000V₂

Explanation: Not available for this question

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Q:

Mass of object A is 120000 and that of B is 0.240. Compare their masses.

A) Mass of Object B is approximately is 105 times larger than A B) Mass of Object A is approximately is 105 times larger than B
C) Mass of Object A is approximately is 106 times larger than B D) Mass of Object B is approximately is 106 times larger than A
 
Answer & Explanation Answer: C) Mass of Object A is approximately is 106 times larger than B

Explanation: Not available for this question

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Q:

What is the Usual form of 16.8 × 10⁵?

A) 16800000 B) 1680000
C) 168000 D) 16800
 
Answer & Explanation Answer: B) 1680000

Explanation: 16.8 × 10⁵ = 1680000.

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Q:

Find the usual form of 2.33 × 10³.

A) 0.002033 B) 0.0000233
C) 0.00233 D) 0.000233
 
Answer & Explanation Answer: C) 0.00233

Explanation: Not available for this question

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16
Q:

What is the standard form of 80460000?

A) 8.046 × 10⁷ B) 8.046 × 10⁶
C) 8.046 × 10⁹ D) 8.046 × 10⁸
 
Answer & Explanation Answer: A) 8.046 × 10⁷

Explanation: 80460000 = 8.046 × 10⁷.

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17
Q:

Find the value of (2³)².

A) 128 B) 16
C) 32 D) 64
 
Answer & Explanation Answer: D) 64

Explanation: Not available for this question

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Q:

If the edge of a cube is doubled then how many times the volume will increase?

A) 1 B) 2
C) 4 D) 8
 
Answer & Explanation Answer: D) 8

Explanation: Volume of cube = a³
If side is doubled,
Volume of cube = (2a)³ = 8a³.

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16
Q:

Find the height of the cylinder whose volume is 14.08 m³ and radius is 4 m.

A) 0.54 m B) 0.56 m
C) 0.14 m D) 0.28 m
 
Answer & Explanation Answer: D) 0.28 m

Explanation: Not available for this question

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