Major Competitive Exams

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Q. What is the voltage drop across a 5 ohm resistor carrying a current of 2 A?

A. 5 V
B. 10 V
C. 15 V
D. 20 V

Solution

Using Ohm's law, V = I * R = 2 A * 5 ohms = 10 V.

Correct Answer: B — 10 V

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Q. What is the voltage drop across a 5 ohm resistor carrying a current of 3 A?

A. 15 V
B. 10 V
C. 5 V
D. 20 V

Solution

Using Ohm's law, V = I * R = 3 A * 5Ω = 15 V.

Correct Answer: A — 15 V

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Q. What is the voltage drop across a 5Ω resistor carrying a current of 3A?

A. 5V
B. 10V
C. 15V
D. 20V

Solution

Using Ohm's law, V = I * R = 3A * 5Ω = 15V.

Correct Answer: C — 15V

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Q. What is the volume occupied by 1 mole of an ideal gas at STP (Standard Temperature and Pressure)?

A. 22.4 L
B. 24.0 L
C. 18.0 L
D. 20.0 L

Solution

At STP, 1 mole of an ideal gas occupies 22.4 liters.

Correct Answer: A — 22.4 L

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Q. What is the volume occupied by 1 mole of an ideal gas at STP?

A. 22.4 L
B. 24 L
C. 20 L
D. 18 L

Solution

At STP, 1 mole of an ideal gas occupies 22.4 liters.

Correct Answer: A — 22.4 L

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Q. What is the volume occupied by 4 moles of an ideal gas at STP?

A. 22.4 L
B. 44.8 L
C. 67.2 L
D. 89.6 L

Solution

At STP, 1 mole of gas occupies 22.4 L. Therefore, 4 moles occupy 4 x 22.4 L = 89.6 L.

Correct Answer: B — 44.8 L

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Q. What is the volume of 0.2 M NaOH required to neutralize 0.1 M HCl in 250 mL? (2020)

A. 125 mL
B. 250 mL
C. 500 mL
D. 100 mL

Solution

Using the formula M1V1 = M2V2, (0.1 M)(0.25 L) = (0.2 M)(V2). V2 = 0.125 L = 125 mL.

Correct Answer: A — 125 mL

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Q. What is the volume of 1 liter in cubic meters?

A. 0.001
B. 0.01
C. 1
D. 1000

Solution

1 liter is equal to 0.001 cubic meters.

Correct Answer: A — 0.001

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Q. What is the volume of 1 M HCl solution needed to obtain 0.5 moles of HCl? (2022)

A. 0.5 L
B. 1 L
C. 2 L
D. 0.25 L

Solution

Volume = moles / molarity = 0.5 moles / 1 M = 0.5 L.

Correct Answer: A — 0.5 L

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Q. What is the volume of 1 M NaOH solution required to obtain 0.5 moles of NaOH?

A. 0.5 L
B. 1 L
C. 2 L
D. 0.25 L

Solution

Using the formula M = moles/volume, Volume = moles/M = 0.5 moles / 1 M = 0.5 L.

Correct Answer: A — 0.5 L

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Q. What is the volume of 1 mole of an ideal gas at STP (Standard Temperature and Pressure)?

A. 22.4 L
B. 24.0 L
C. 18.0 L
D. 20.0 L

Solution

At STP, 1 mole of an ideal gas occupies 22.4 liters.

Correct Answer: A — 22.4 L

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Q. What is the volume of 1 mole of an ideal gas at STP?

A. 22.4 L
B. 24 L
C. 10 L
D. 1 L

Solution

At STP (Standard Temperature and Pressure), 1 mole of an ideal gas occupies 22.4 liters.

Correct Answer: A — 22.4 L

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Q. What is the volume of 1 mole of an ideal gas at STP? (2019) 2019

A. 22.4 L
B. 24 L
C. 1 L
D. 10 L

Solution

At STP, 1 mole of an ideal gas occupies 22.4 liters.

Correct Answer: A — 22.4 L

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Q. What is the volume of 1 mole of gas at STP?

A. 22.4 L
B. 24 L
C. 20 L
D. 18 L

Solution

At STP, 1 mole of gas occupies 22.4 liters.

Correct Answer: A — 22.4 L

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Q. What is the volume of 4 moles of an ideal gas at STP?

A. 22.4 L
B. 44.8 L
C. 89.6 L
D. 112 L

Solution

Volume = moles x volume per mole = 4 moles x 22.4 L/mole = 89.6 L.

Correct Answer: C — 89.6 L

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Q. What is the volume of a 2 M NaOH solution needed to obtain 4 moles of NaOH? (2021) 2021

A. 2 L
B. 1 L
C. 0.5 L
D. 4 L

Solution

Volume (L) = moles / molarity = 4 moles / 2 M = 2 L.

Correct Answer: A — 2 L

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Q. What is the volume of a 2 M solution that contains 4 moles of solute?

A. 2 L
B. 4 L
C. 1 L
D. 0.5 L

Solution

Volume = moles of solute / molarity = 4 moles / 2 M = 2 L.

Correct Answer: B — 4 L

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Q. What is the volume of a cube with a side length of 2 meters?

A. 4 m³
B. 6 m³
C. 8 m³
D. 10 m³

Solution

Volume = side³ = 2³ = 8 m³.

Correct Answer: C — 8 m³

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Q. What is the volume of a cube with a side length of 3 cm?

A. 9 cm³
B. 18 cm³
C. 27 cm³
D. 36 cm³

Solution

The volume of a cube is given by side³, so 3 cm³ = 27 cm³.

Correct Answer: C — 27 cm³

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Q. What is the volume of a cube with a side length of 4 cm?

A. 16 cm³
B. 32 cm³
C. 64 cm³
D. 80 cm³

Solution

The volume of a cube is given by V = a³. Here, V = 4³ = 64 cm³.

Correct Answer: C — 64 cm³

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Q. What is the volume of a cube with a side length of 4 units?

A. 16 cubic units
B. 64 cubic units
C. 32 cubic units
D. 48 cubic units

Solution

Volume = side^3 = 4^3 = 64 cubic units.

Correct Answer: B — 64 cubic units

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Q. What is the volume of a cube with a side length of 5 cm? (2022)

A. 25 cm³
B. 50 cm³
C. 125 cm³
D. 150 cm³

Solution

The volume of a cube is given by V = side³. For a side length of 5 cm, V = 5³ = 125 cm³.

Correct Answer: C — 125 cm³

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Q. What is the volume of a cube with side length 3 units? (2023)

A. 9
B. 27
C. 81
D. 6

Solution

Volume = side³ = 3³ = 27 cubic units.

Correct Answer: B — 27

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Q. What is the volume of a cube with side length 4 cm?

A. 16 cm³
B. 64 cm³
C. 32 cm³
D. 48 cm³

Solution

Volume = side³ = 4 cm × 4 cm × 4 cm = 64 cm³.

Correct Answer: B — 64 cm³

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Q. What is the volume of a cube with side length 4 units? (2020)

A. 16
B. 64
C. 32
D. 48

Solution

Volume = side³ = 4³ = 64 cubic units.

Correct Answer: B — 64

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Q. What is the volume of a cylinder with a radius of 3 cm and a height of 10 cm? (Use π = 3.14) (2021)

A. 28.26 cm³
B. 84.78 cm³
C. 94.2 cm³
D. 100.5 cm³

Solution

Volume = πr²h = 3.14 * (3)² * 10 = 3.14 * 9 * 10 = 282.6 cm³.

Correct Answer: B — 84.78 cm³

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Q. What is the volume of a cylinder with radius 2 and height 5? (2023)

A. 20π
B. 10π
C. 15π
D. 25π

Solution

Volume = πr²h = π(2²)(5) = 20π cubic units.

Correct Answer: A — 20π

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Q. What is the volume of a cylinder with radius 3 units and height 5 units? (2021)

A. 45π
B. 30π
C. 15π
D. 9π

Solution

Volume = πr²h = π(3²)(5) = 45π cubic units.

Correct Answer: A — 45π

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Q. What is the volume of a pyramid with a base area of 20 cm² and a height of 9 cm?

A. 60 cm³
B. 80 cm³
C. 90 cm³
D. 100 cm³

Solution

Volume = (1/3) * base area * height = (1/3) * 20 * 9 = 60 cm³

Correct Answer: B — 80 cm³

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Q. What is the volume of a rectangular prism with length 5 cm, width 3 cm, and height 2 cm?

A. 30 cm³
B. 25 cm³
C. 20 cm³
D. 15 cm³

Solution

Volume = lwh = 5 * 3 * 2 = 30 cm³

Correct Answer: A — 30 cm³

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Major Competitive Exams

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