Questions

Q:

Electrons in the highest energy level of an atom are called ________.

A) valence protons B) orbital protons
C) valence electrons D) orbital electrons
 
Answer & Explanation Answer: C) valence electrons

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Q:

On 24 October 2017, the Government of India announced a massive of ______ package to boost economy

A) Rs 7 lakh crore B) Rs 9 lakh crore
C) Rs 15 lakh crore D) Rs 5 lakh crore
 
Answer & Explanation Answer: B) Rs 9 lakh crore

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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

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Q:

Sextant is an instrument used in which of the following ?

A) Gynaecology B) Navigation
C) Birth control D) Medical treatment
 
Answer & Explanation Answer: B) Navigation

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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

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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

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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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