Q:

Device used for the detection and measurement of all types of radiation (alpha, beta and gamma)

A) Geiger counter	B) Polarimeter
C) Calorimeter	D) Radiometer

Answer & Explanation Answer: A) Geiger counter

Explanation:

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Q:

The SI unit of G, the universal gravitation constant is ______________.

A) N m2 kg2	B) N m2 kg-2
C) N m-2 kg-2	D) N m-2 kg2

Answer & Explanation Answer: B) N m2 kg-2

Explanation:

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Q:

To hear a distinct echo the time interval between the original sound and the reflected sound must be at least

A) 0.2 second	B) 1 second
C) 0.1 second	D) 2 seconds

Answer & Explanation Answer: C) 0.1 second

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Q:

What will be the force of attraction between two bodies weighing 20 kg and 50 kg, respectively, with a distance of 2 metre between them?

A) 16.675 x 10-11 N	B) 166.75 x 10-10 N
C) 6.67 x 10-11 N	D) 16.67 x 5-10 N

Answer & Explanation Answer: B) 166.75 x 10-10 N

Explanation:

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Q:

Tsunami waves are the undersea occurrence of earthquake exceeding 7.5 on Richter scale. Which one of the following statements regarding this is not correct?

A) It often generates strong waves	B) The pacific coasts are most vulnerable to Tsunami waves.
C) Tsunami waves are also called high-energy tidal waves or seismic sea waves.	D) Tsunami is a Latin word.

Answer & Explanation Answer: D) Tsunami is a Latin word.

Explanation:

All are correct except D, as Tsunami is a Japanese word

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Q:

Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?

A) Greenhouse effect	B) Solid wastes
C) Pollution	D) Deforestation

Answer & Explanation Answer: C) Pollution

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Q:

Who appoints the Finance Commission in India?

A) Governor,R.B.I	B) CAG of India
C) President of India	D) Central Finance Minister

Answer & Explanation Answer: C) President of India

Explanation:

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Q:

How many members of upper house (Rajya Sabha) can be nominated by President of India?

A) 10	B) 11
C) 12	D) 15

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