Q:

Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?

A) Greenhouse effect	B) Solid wastes
C) Pollution	D) Deforestation

Answer & Explanation Answer: C) Pollution

Explanation:

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Q:

When body is accelerated--

A) Its velocity never changes.	B) Its speed will always change.
C) Its direction always changes.	D) Its speed may or may not change.

Answer & Explanation Answer: D) Its speed may or may not change.

Explanation:

Uniform circular motion, that is constant speed along a circular path, is an example of a body experiencing acceleration resulting in velocity of a constant magnitude but the change of direction

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Q:

Device used for the detection and measurement of all types of radiation (alpha, beta and gamma)

A) Geiger counter	B) Polarimeter
C) Calorimeter	D) Radiometer

Answer & Explanation Answer: A) Geiger counter

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:

In the names Mangifera indica (mango), Solanum tuberosum (potato) and Panthera leo (lion), what does the three names, indica, tuberosum and leo, represent?

A) Binomial Nomenclature	B) Taxonomic Hierarchy
C) Identification	D) Specific Epithet

Answer & Explanation Answer: D) Specific Epithet

Explanation:

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Q:

According to Malthusian theory of population

A) Population increases in geometric ratio, food supply	B) Population increases in arithmetic ratio, food supply increases in geometric ratio
C) Population increases in a harmonic mean, food supply increases in geometric ratio	D) Population increases in a harmonic ratio, food supply increases in a arithmetic ratio

Answer & Explanation Answer: A) Population increases in geometric ratio, food supply

Explanation:

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Q:

Which Cricketer has scored highest number of runs in T20 Internationals?

A) David Warner	B) Virat Kohli
C) Brendon McCullum	D) Chris Gayle

Answer & Explanation Answer: C) Brendon McCullum

Explanation:

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Q:

α and β are the roots of the quadratic equation $x^{2} - x - 1 = 0$ . What is the value of $α^{8} + β^{8}$ ?

A) 47	B) 54
C) 59	D) 68

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