Q:

Who first determined the value of G (gravitational constant)?

A) Lord Cavendish	B) R.R Heyl
C) Boyle	D) Poynting

Answer & Explanation Answer: A) Lord Cavendish

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

Explanation:

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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:

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

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

Answer & Explanation Answer: C) 12

Explanation:

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Q:

In which system is the central government weakest?

A) confederate government	B) representative government
C) unitary government	D) federal government

Answer & Explanation Answer: A) confederate government

Explanation:

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Q:

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

I should (has to be) with them tonight.

A) has been	B) have been
C) been	D) no improvement

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