Questions

Q:

Article 43A of the Indian Constitution "Participation of workers in management of industries" deals with?

A) the State Government B) the Union Government
C) the directive principles of state policy D) the fundamental rights of the Indian Citizen
 
Answer & Explanation Answer: C) the directive principles of state policy

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Q:

Which of the following is the most abundant metal on Earth's crust?

A) Magnesium B) Iron
C) Copper D) Aluminium
 
Answer & Explanation Answer: D) Aluminium

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Q:

Rayon is obtained from which among thefollowing?

A) Silk B) Wood pulp  
C) Wool   D) Cotton
 
Answer & Explanation Answer: B) Wood pulp  

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Filed Under: General Science
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Q:

Which of the following are the smaller planets than the size of the Earth?

A) Uranus and Mars B) Neptune and Venus
C) Venus and Mars D) Neptune and Mars
 
Answer & Explanation Answer: C) Venus and Mars

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Q:

The method of soil conservation in which stones, grass, soil are used to build barriers along contours and trenches are made in front of the barriers to collect water is called?

A) Mulching B) Contour barriers
C) Rock dam D) Terrace farming
 
Answer & Explanation Answer: B) Contour barriers

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Q:

A deep crack in a glacier is called

A) A crevice B) A crevasse
C) A crack D) A cleft
 
Answer & Explanation Answer: B) A crevasse

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Q:

Which one of the following statements is not correct?

A) The response of the ear to sound of increasing intensity is approximately logarithmic. B) The sensitivity of the human ear does not vary with the frequency of the sound.
C) When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave. D) Longitudinal waves can travel in all media-solids, liquids and gases.
 
Answer & Explanation Answer: B) The sensitivity of the human ear does not vary with the frequency of the sound.

Explanation:

The human ear can respond to minute pressure variations inthe air if they are in the audible frequency range, roughly 20 Hz -20 kHz. In fact, tests conducted show an increased sensitivity in the 3000 Hz range which is the optimal amplification frequency in the human ear. So, the sensitivity of the human ear varies with the frequency of the sound.

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Filed Under: Physics
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Q:

Addition of suitable impurities into semiconductor, is called

A) Doping B) Mixing
C) Forming D) Diluting
 
Answer & Explanation Answer: A) Doping

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