Q:

A ball is dropped from a height of 10 m. It strikes the ground and rebounds up to a height of 2. m. During the collision, the per cent loss in the kinetic energy is

A) 100%	B) 25%
C) 50%	D) 75%

Answer & Explanation Answer: D) 75%

Explanation:

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Filed Under: Physics
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Q:

An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force of gravity in this process?

A) 400 J	B) 50 J
C) 40 J	D) 100 J

Answer & Explanation Answer: A) 400 J

Explanation:

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Q:

‘Altitude sickness’ is caused at high altitude due to

A) high partial pressure of oxygen	B) low partial pressure of oxygen
C) low level of haemoglobin	D) high partial pressure of carbon dioxide

Answer & Explanation Answer: B) low partial pressure of oxygen

Explanation:

Altitude sickness, the mildest form being acute mountain sickness (AMS), is the negative health effect of high altitude, caused by rapid exposure to low amounts of oxygen at high elevation.

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Filed Under: General Science
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Q:

Which state topped the Urban Governance Index (UGI) - 2020?

A) Odisha	B) Chhattisgarh
C) Kerala	D) Tamil Nadu

Answer & Explanation Answer: A) Odisha

Explanation:

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Filed Under: General Awareness
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Q:

Which one among the following stars is nearest to the earth?

A) Sirius	B) Arcturus
C) Spica	D) Proxima Centauri

Answer & Explanation Answer: D) Proxima Centauri

Explanation:

Proxima Centauri is the nearest star, and on August 24, 2016 astronomers announced it likely has a planet. This star is the nearest of a triple star system, which we on Earth see with the eye alone as the single star Alpha Centauri, visible from Earth's Southern Hemisphere

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Filed Under: General Science
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Q:

In which market form, a market or an industry is dominated by a single seller?

A) Oligopoly	B) Monopoly
C) Duopoly	D) Monopolistic Competition

Answer & Explanation Answer: B) Monopoly

Explanation:

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Filed Under: Indian Economy
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Q:

Which of the following metals is found in free state?

A) Sodium	B) Gold
C) Potassium	D) Calcium

Answer & Explanation Answer: B) Gold

Explanation:

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Filed Under: Chemistry
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Q:

How many bio-geographical zones are there in India?

A) 2	B) 4
C) 6	D) 10

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