Q:

The commonly used thermometric substance is _____.

A) mineral oil	B) Alcohol
C) Mercury	D) Petrol

Answer & Explanation Answer: C) Mercury

Explanation:

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Q:

What is the process of waste water treatment is commonly known?

A) Waste water management	B) Cleaning of water
C) Sewage treatment	D) Decontamination

Answer & Explanation Answer: C) Sewage treatment

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Q:

In bio fortification technique plant breeders use breeding to overcome

A) Loss due to insect pests	B) Decrease in food production
C) Deficiencies of micronutrients and vitamins	D) Loss due to plant diseases

Answer & Explanation Answer: C) Deficiencies of micronutrients and vitamins

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Q:

How many members can be nominated by the President of India in the Rajya Sabha?

A) 4	B) 8
C) 12	D) 16

Answer & Explanation Answer: C) 12

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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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Q:

What is the name of India’s fastest and first multi – petaflops super computer unveiled at Pune–based India Institute of Tropical Meteorology?

A) Param	B) Pratyush
C) Prashant	D) Paras

Answer & Explanation Answer: B) Pratyush

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Q:

In terms of size, Neptune ranks no. ___ in our Solar System.

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: D) 4

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Q:

What cells line the ventricles of the brain?

A) Schwann's cells	B) Ependymal cells
C) Nerve cells	D) Neuroglia

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