Exams Questions and Answers

Q:

Which metal is the best conductor of heat?

A) Silver	B) Gold
C) Copper	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Silver is the best conductor of both heat and electricity among metals with a thermal conduction value of about 430 W/(mK).

Gold and copper both come respectably close to silver.

Copper being significantly less costly it is often chosen over silver in many applications.

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Filed Under: Physics
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Q:

Kaolin is chemically classified as

A) Argillaceous rock	B) Silicious rock
C) Metamorphic rock	D) Calcareous rock

Answer & Explanation Answer: A) Argillaceous rock

Explanation:

Kaolin is chemically classified as Argillaceous rock.

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Filed Under: Chemistry
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Q:

Cast iron during machining produces

A) Discontinuous chips	B) Continuous chips with build up edge
C) Continuous chips	D) All of the above

Answer & Explanation Answer: A) Discontinuous chips

Explanation:

Cast iron is a group of iron-carbon alloys with a carbon content greater than 2% and is a brittle material.

cast_iron_during_machining_produces1545889160.jpg image

Its usefulness derives from its relatively low melting temperature.

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Filed Under: Physics
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Q:

20% of 120?

A) 20	B) 24
C) 32	D) 36

Answer & Explanation Answer: B) 24

Explanation:

20% of 120

20 x 120/100

= 4 x 6

= 24

Hence, 20% of 120 = 24.

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Filed Under: Percentage
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Q:

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to “No improvement”.

The trade union is hell bent at getting its demands fulfilled

A) hell bent in	B) hell bent about
C) hell bent on	D) No improvement

Answer & Explanation Answer: C) hell bent on

Explanation:

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Filed Under: English
Exam Prep: TOEFL , GRE , CAT

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Q:

If a=101 then the value of $a (a^{2} - 3 a + 3)$ is

A) 1000000	B) 1010101
C) 1000001	D) 999999

Answer & Explanation Answer: C) 1000001

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In the circle above, chord AB is extended to meet the tangent DE at D. If AB = 12 cm and DE = 8 cm, find the length of BD.

A) 4 cm	B) 5 cm
C) 6 cm	D) 7 cm

Answer & Explanation Answer: A) 4 cm

Explanation:

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Filed Under: Area
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Q:

A can do a work in 15 days and B in 9 days. If they work on it together for 5 days, then what fraction of work is left?

A) 1/6	B) 3/7
C) 1/3	D) 1/9

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