Q:

Formation of shadows can be explained by

A) rectilinear propagation of light	B) reflection
C) refraction	D) total internal reflection

Answer & Explanation Answer: A) rectilinear propagation of light

Explanation:

In this position, the head light will be at the principal focus so that the rays of light falling on the cancave mirror will be rendered parallel

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Filed Under: Physics

63 9037

Q:

In 1990 a person is 15 years old. In 2000 that same person is 5 years old. How can this be possible?

Answer

It can be possible in only B.C. i.e, Before Christ. That was about 2000 years ago.

Given,

In 1990 B.C = 2000 + 1990 = 3990 years ago, a person is 15 years Old

=> In 1995 B.C = 2000 + 1995 = 3995 years ago, the same person will be 10 years Old

Therefore, In 2000 B.C = 2000 + 2000 = 4000 years ago, the same person will be 5 years Old.

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Subject: Logic Puzzles Exam Prep: Bank Exams
Job Role: Software Architect , Project Manager , Network Engineer , IT Trainer , Database Administration , Bank PO , Bank Clerk , Analyst

48 9036

Q:

Which of the following carbon compounds is used as a fire- extinguisher?

A) Carbon disulphide	B) Chloroform
C) Carbon tetrachloride	D) Methyl ene chloride

Answer & Explanation Answer: C) Carbon tetrachloride

Explanation:

Vapour of carbon tetra chloride $(c c l_{4})$ is non-inflammable and is heavier than air. Hence it is used as a fire extinguisher under the trade name of pyrene.

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Filed Under: Chemistry

16 9035

Q:

One of the best preserved Buddhist caves, Karla, is in which of the following states?

A) Bihar	B) Uttar Pradesh
C) Maharashtra	D) Uttarakhand

Answer & Explanation Answer: C) Maharashtra

Explanation:

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Filed Under: Indian Geography
Exam Prep: Bank Exams

2 9034

Q:

Nature of unemployment in agriculture in India is

A) Seasonal	B) Disguised
C) both ' a ' and ' b '	D) None of these

Answer & Explanation Answer: C) both ' a ' and ' b '

Explanation:

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Filed Under: Indian Economy

9 9032

Q:

Excretion is best described as the removal of

A) Undigested material from the digestive tract	B) Metabolic wastes from a cell
C) Toxic wastes by the process of cyclosis	D) Water molecules from dipeptide hydrolysis

Answer & Explanation Answer: B) Metabolic wastes from a cell

Explanation:

Excretion is best described as the removal of Metabolic wastes from a cell.

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

21 9030

Q:

Which sector of Indian Economy has shown remarkable expansion during the last decade

A) Primary Sector	B) Secondary Sector
C) Tertiary Sector	D) Mining Sector

Answer & Explanation Answer: C) Tertiary Sector

Explanation:

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Filed Under: Indian Economy

5 9025

Q:

By which ruler Pataliputra was chosen for the first time as a capital?

A) Ajatasatru	B) Kalasok
C) Udayin	D) Kanishka

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