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 General Science Questions

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Q:

Who was the first Indian astronomer to calculate the time taken by earth to orbit the sun?

A) Aryabhatta B) Ved Bhatnagara
C) Bhaskaracharya D) Bishu devtamapi
 
Answer & Explanation Answer: C) Bhaskaracharya

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3 700
Q:

Soil contains decayed remains of living organisms. This is called __________.

A) minerals B) biosphere
C) saline soil D) humus
 
Answer & Explanation Answer: D) humus

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3 861
Q:

Thunder Cloud happens in which layer of the atmosphere?

A) Ionoshpere B) Ozonosphere
C) Troposphere D) Stratosphere
 
Answer & Explanation Answer: C) Troposphere

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Q:

The process of electric discharge between clouds and the earth or between different clouds causes _____________.

A) thunderstorm B) cyclone
C) lightning D) winds
 
Answer & Explanation Answer: C) lightning

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3 691
Q:

Which of the following is biodegradable?

A) Cattle dung B) Aluminium cans
C) Plastics D) D.D.T
 
Answer & Explanation Answer: A) Cattle dung

Explanation:

Any substance that does not cause pollution and is capable of getting decomposed by any living organism is called as Bio degradable. Human & animal excreta, plant wastes etc... come under bio-degradable.

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3 525
Q:

What is organic matter in soil is also called

A) residue B) humus
C) occlusion D) compact
 
Answer & Explanation Answer: B) humus

Explanation:

In soil, organic matter consists of plant and animal material that is in the process of decomposing. When it has fully decomposed it is called humus. Soil organic matter serves as a reservoir of nutrients for crops, provides soil aggregation, increases nutrient exchange, retains moisture, reduces compaction,... 

This humus is important for soil structure because it holds individual mineral particles together in clusters.

 

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3 463
Q:

The red planet is ___________.

A) Venus B) Saturn
C) Mars D) Neptune
 
Answer & Explanation Answer: C) Mars

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3 550
Q:

Fruits and vegetables are good sources of

A) Fats & Fibre B) Vitamins & Fats
C) Minerals & Vitamins D) Calories & Fats
 
Answer & Explanation Answer: C) Minerals & Vitamins

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