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

0 1033

Q:

A sentence has been given in Active/Passive Voice. Out of the four given alternatives, select the one which best expresses the same sentence in Passive/Active Voice.

Why did your mother write such a book?

A) Why was such a book written by your mother?	B) Why is such a book written by your mother?
C) Why your mother wrote such a book?	D) Why was such a book wrote by your mother?

Answer & Explanation Answer: A) Why was such a book written by your mother?

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

First payments bank in India to integrate the Unified Payments Interface (UPI) on its digital platform is-

A) Paytm Payment Bank	B) Airtel Payment Bank
C) India Post Payment Bank	D) FINO Payment Bank

Answer & Explanation Answer: B) Airtel Payment Bank

Explanation:

Airtel Payments Bank has become the first payments bank in India to integrate the Unified Payments Interface (UPI) on its digital platform.

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Filed Under: General Awareness

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Q:

The innermost layer is the core with a radius of about ___________ km.

A) 500	B) 6500
C) 9500	D) 3500

Answer & Explanation Answer: D) 3500

Explanation:

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Filed Under: General Science
Exam Prep: Bank Exams

1 1033

Q:

Which of the following is a Saprotroph?

A) Mushroom	B) Man
C) Pigeon	D) Algae

Answer & Explanation Answer: A) Mushroom

Explanation:

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Filed Under: General Science
Exam Prep: AIEEE , Bank Exams , CAT

1 1032

Q:

Which of the following is an ore of iron?

A) Dolomite	B) Epsom Salt
C) Siderite	D) Galena

Answer & Explanation Answer: C) Siderite

Explanation:

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Filed Under: General Science
Exam Prep: Bank Exams

3 1032

Q:

Optical fibre works on which of the following principle of light?

A) Reflection	B) Refraction
C) Diffraction	D) Total internal reflection

Answer & Explanation Answer: D) Total internal reflection

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

2 1032

Q:

Who invented "Coca Cola"?

A) Floyd Paxton	B) Les Paul
C) John Pemberton	D) Forrest Parry

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