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 General Science Questions

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Q:

Stars twinkle but planets do not twinkle because

A) they emit light of a constant intensity B) their distance from the earth does not change with time
C) they are very far away from the earth resulting in decrease in intensity of light D) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable
 
Answer & Explanation Answer: A) they emit light of a constant intensity

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Q:

When does solar eclipse take place ?

A) When the sun is between the moon and earth B) When the earth is between the moon and sun
C) When the moon is between the sun and earth D) When the moon does not lie on the line joining the sun and earth
 
Answer & Explanation Answer: C) When the moon is between the sun and earth

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Q:

Red rot is a disease caused to which of the following plant?

A) Paddy B) Sugarcane
C) Mustard D) Wheat
 
Answer & Explanation Answer: B) Sugarcane

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Q:

Atomic radius is measured in:

A) Micrometres B) Nanometres
C) Millimetres D) Centimetres
 
Answer & Explanation Answer: B) Nanometres

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Q:

The outer most layer of the Sun is known as--

A) Corona B) Photosphere
C) Chromosphere D) Granule
 
Answer & Explanation Answer: A) Corona

Explanation:

The corona is the outermost layer of the Sun, starting at about 1300 miles (2100 km) above the solar surface (the photosphere)

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Q:

Which of the following is NOT true about vascular system?

A) Life span of human RBC is 115-120 days. B) The vascular system forms about 7-8% of the body weight.
C) Blood is white or red vascular connective tissue. D) There is about 6.8 liters of blood in an adult person
 
Answer & Explanation Answer: C) Blood is white or red vascular connective tissue.

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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:

_____ is the source of energy and materials in human beings.

A) Water B) Sunlight
C) Food D) Gas
 
Answer & Explanation Answer: C) Food

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