Q:

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.

A) 3750	B) 7500
C) 1875	D) 5000

Answer & Explanation Answer: A) 3750

Explanation:

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Q:

HEPA filters are used to remove microbes from

A) human tissues	B) air
C) medical instruments	D) liquids

Answer & Explanation Answer: B) air

Explanation:

High-efficiency particulate air (HEPA), also known as high-efficiency particulate absorbing and high-efficiency particulate arrestance, is an efficiency standard of air filter.

hepa-filters1596516018.png image

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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:

The space shuttle which took Sunita Williams beyond earth was

A) Challenger	B) Galileo
C) Discovery	D) Voyager-2

Answer & Explanation Answer: C) Discovery

Explanation:

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Q:

Which of the following metals is stored in kerosene oil?

A) Copper	B) Sodium
C) Platinum	D) Gold

Answer & Explanation Answer: B) Sodium

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:

The Ministry of Power, Government of India has recently constituted a Committee to investigate the causes of the accident that occurred on 1stNovember, 2017 at Feroze Gandhi Thermal Power Plant Ltd., Unchahar, in Uttar Pradesh. Who among the following is the Chairman of the Committee?

A) Dr. L. D. Papney	B) Shri Dhawal Prakash Antapurkar
C) Shri Subir Chakraborty	D) Shri P. Siwal

Answer & Explanation Answer: D) Shri P. Siwal

Explanation:

Power Ministry constitutes a Committee to investigate into the causes of the NTPC, Unchahar Thermal Power Plant accident

The composition of the committee would be as follows:

Name Position

Shri P.D. Siwal, Member (Thermal), CEA Chairman

Shri Subir Chakraborty,Director (Projects), UPRVUNL Member

Shri Dhawal Prakash Antapurkar,Director of Steam Boilers, Maharashtra Member

Dr. L.D. Papney,Chief Engoneer, (TE&TD), CEA Member & Convenor

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Q:

Official Currency of Nepal is called ________

A) Nepalese Taka	B) Loti
C) Birr	D) Nepalese Rupee

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