Exams Questions and Answers

Q:

Which substance is produced when alcohol is added with petrol and used as a fuel?

A) Only oxygen	B) Only carbon-dioxide
C) Only water	D) Carbon-dioxide and water both

Answer & Explanation Answer: B) Only carbon-dioxide

Explanation:

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Filed Under: Chemistry
Exam Prep: Bank Exams

3 59189

Q:

If the radius of a circle is decreased by 50%, find the percentage decrease in its area.

A) 55%	B) 65%
C) 75%	D) 85%

Answer & Explanation Answer: C) 75%

Explanation:

Let original radius = R.

New radius = $\frac{50}{100} R$ = $\frac{50}{100} R$

Original area = $\frac{R}{2}$ and new area = ${πR}^{2}$

$\frac{3 {πR}^{2}}{4} * \frac{1}{{πR}^{2}} * 100$

Decrease in area = $π {(\frac{R}{2})}^{2} = \frac{{πR}^{2}}{4}$ = 75%

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

147 59100

Q:

$\frac{{(0.3)}^{3} + {(0.2)}^{3}}{{(0.3 - 0.2)}^{2}} = ?$

A) 5/2	B) 2
C) 7/2	D) 3/2

Answer & Explanation Answer: C) 7/2

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Filed Under: Simplification
Exam Prep: Bank Exams

0 59085

Q:

Simplify : ${(27)}^{\frac{- 2}{3}}$

A) 1/18	B) 9
C) 1/9	D) 18

Answer & Explanation Answer: C) 1/9

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Filed Under: Simplification
Exam Prep: Bank Exams

1 59064

Q:

If ${(x - 7)}^{2} + {(y + 10)}^{2} + {(z - 6)}^{2} = 0$ , then find the value of x + y+ z.

A) 1	B) 3
C) 5	D) 7

Answer & Explanation Answer: B) 3

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Filed Under: Simplification
Exam Prep: Bank Exams

1 59040

Q:

The first important ruler to emerge from the Chola Dynasty was __________.

A) Vijayalaya	B) Rajaraja Chola
C) Rajendra Chola	D) Rajadhiraj Chola

Answer & Explanation Answer: B) Rajaraja Chola

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Filed Under: Indian History
Exam Prep: Bank Exams

1 59028

Q:

The magnitude of the gravitational force will be equal to the _________.

A) product of mass and acceleration due to the gravitational force	B) ratio of mass and acceleration due to the gravitational force
C) ratio of acceleration due to the gravitational force and mass	D) reciprocal of product of mass and acceleration due to the gravitational force

Answer & Explanation Answer: A) product of mass and acceleration due to the gravitational force

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Filed Under: Physics
Exam Prep: Bank Exams

4 59011

Q:

Given w = -2, x = 3, y = 0 & z = -1/2, find the value of $w^{2} \sqrt{(z^{2} + y^{2})}$

A) +-2	B) -2
C) 2	D) 4

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