Q:

A solid sphere of radius 6 cm is melted and re-casted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is 5 cm and its height is 32 cm, find the uniform thickness of the cylinder ?

A) 3 cm	B) 1.5 cm
C) 1 cm	D) 2.5 cm

Answer & Explanation Answer: C) 1 cm

Explanation:

Let, inner radius of cylinder be ‘x’ cm.
4/3 π(6)3 = π × 32 (52 − x2)

or, (4 × 6 × 6 × 6) / (3 × 32) = 25 − x2 or, x2 = 25 − 9
or, x = 4 cm
Hence, thickness = 5 – 4 = 1 cm.

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

He was elected (A)/ as chairman (B)/ of the college. (C)/ No Error (D)

A) A	B) B
C) C	D) D

Answer & Explanation Answer: B) B

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

This town has an ancient temple(A)/and beautiful waterfall(B)/so many tourists come here.(C)/No error(D)

A) A	B) B
C) C	D) D

Answer & Explanation Answer: B) B

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it.

A record of one's own life written by oneself

A) History	B) Biography
C) Bibliography	D) Autobiography

Answer & Explanation Answer: D) Autobiography

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Acceleration due to gravity on a planet decreases with ______.

A) decrease in radius of the planet	B) increase in mass of the planet
C) decrease in mass of the body	D) increase in altitude from surface of the planet

Answer & Explanation Answer: D) increase in altitude from surface of the planet

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

While watching 3D movies at the theater, we have to wear special glasses because?

A) The glasses allow our left and right eyes to see different images	B) 3-D movies use special colors which cannot be sensed by the human eye
C) 3-D movies are brighter than ordinary movies and can hurt our eyes if seen directly	D) The glasses allow both the eyes to see similar images

Answer & Explanation Answer: A) The glasses allow our left and right eyes to see different images

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

Ideas of welfare state are contained in

A) Fundamental Rights	B) Directive Principles of State Policy
C) Preamble of the Constitution	D) Part VII

Answer & Explanation Answer: B) Directive Principles of State Policy

Explanation:

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Filed Under: Indian Politics
Exam Prep: Bank Exams

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Q:

Sour taste of lemon is due to the presence of which of the following ?

A) Citric acid	B) Acetic acid
C) Oxalic acid	D) Formic acid

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