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Q:

Particulates (< 1 μm size) remaining suspended in air indefinitely and transported by wind currents are called

A) Mists B) Fumes
C) Aerosols D) Smoke
 
Answer & Explanation Answer: C) Aerosols

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Filed Under: General Science
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Q:

The ______________ monsoon winds carry lots of water from the Indian Ocean

A) northwest B) southwest
C) southeast D) northeast
 
Answer & Explanation Answer: B) southwest

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Filed Under: General Science
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Q:

A shop keeper cheats to the extent of 10% while buying and selling fruits, by using tampered weights. His total gain, in %, is:

A) 21 B) 24
C) 22 D) 23
 
Answer & Explanation Answer: A) 21

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Filed Under: Quantitative Aptitude - Arithmetic Ability
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Q:

Find equation of the perpendicular to segment joining the points A(0,4) and B(-5,9) and passing through the point P. Point P divides segment AB in the ratio 2:3.

A) x - y = 8 B) x - y = -8
C) x + y = -8 D) x + y = 8
 
Answer & Explanation Answer: B) x - y = -8

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Q:

Which of these countries is not a permanent member of United Nations Security Council?

A) China B) India
C) United States D) France
 
Answer & Explanation Answer: B) India

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Filed Under: World Organisations
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Q:

Which one of the following statements is correct?

A) The oxidation number for hydrogen is always zero. B) The oxidation number for hydrogen is always + 1.
C) The oxidation number for hydrogen is always -1. D) Hydrogen can have more than one oxidation number.
 
Answer & Explanation Answer: D) Hydrogen can have more than one oxidation number.

Explanation:

Hydrogen has two possible oxidation numbers: +1 and -1.

-1 in case of hydrides.

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Filed Under: Chemistry
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Q:

By volume, 78% of air is _______________

A) nitrogen B) oxygen
C) hydrogen D) helium
 
Answer & Explanation Answer: A) nitrogen

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Filed Under: Chemistry
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Q:

______ is a thyroid hormone which controls the balance of calcium in the body.

A) Calcitonin B) Thyroxine
C) Calmodulin D) all of these
 
Answer & Explanation Answer: A) Calcitonin

Explanation:

Calcitonin is 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells of the thyroid, and in many other animals in the ultimopharyngeal body. It acts to reduce blood calcium, opposing the effects of parathyroid hormone.

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Filed Under: Biology
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