Q:

Choose the most appropriate answer:The present chairman of ISRO is

A) MYS Prasad	B) Kailasavadivoo Sivan
C) AS Kiran Kumar	D) K Radhakrishnan

Answer & Explanation Answer: B) Kailasavadivoo Sivan

Explanation:

Dr Kailasavadivoo Sivanis an Indian space scientist and the chairperson of theIndian Space Research Organization.He is the former Director ofVikram Sarabhai Space Centerand Liquid Propulsion centre.He is joinedthis position Jan2018.

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Q:

Who among the following is credited with starting the work on plant tissue culture?

A) F.C. Steward	B) P. Maheshwari
C) P.R. White	D) Haberlandt

Answer & Explanation Answer: D) Haberlandt

Explanation:

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Q:

The theory behind stars twinkling is that

A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time	B) The intensity of light emitted by them changes with time
C) The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere	D) The distance of the stars from the earth changes with time

Answer & Explanation Answer: A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time

Explanation:

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Q:

Chlorophyll was first isolated and named by

A) Caventou	B) Pelletier
C) Chlorophyll	D) Caventou and Pelletier

Answer & Explanation Answer: D) Caventou and Pelletier

Explanation:

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Q:

Trypsin is present in which of the following?

A) Bile juice	B) Gastric juice
C) Saliva	D) Pancreatic juice

Answer & Explanation Answer: D) Pancreatic juice

Explanation:

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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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Q:

In the nature versus nurture debate sociologists claim that

A) nature and nurture have equal importance.	B) neither nature nor nurture creates the essence of our humanity.
C) nurture is far more important than nature.	D) None

Answer & Explanation Answer: C) nurture is far more important than nature.

Explanation:

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Q:

Notepad' is a text editor in which of the following operating systems?

A) Windows	B) Google Chrome
C) Mozilla Firefox	D) Macintosh

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