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Q:

Warm air is ______.

A) heavier than cold air hence warm air rises up B) lighter than cold air hence warm air moves down
C) lighter than cold air hence warm air rises up D) heavier than cold air hence warm air moves down
 
Answer & Explanation Answer: C) lighter than cold air hence warm air rises up

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Filed Under: Physics
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Q:

The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is

A) 6x2y - 8xy2 + 15y2z B) 6x2y + 8xy2 - 15y2z
C) 6x2y + 8xy2 - 15y2z - 20xyz D) 6x2y - 8xy2 + 15y2z + 20xyz
 
Answer & Explanation Answer: B) 6x2y + 8xy2 - 15y2z

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Filed Under: Simplification
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Q:

Who among the following discovered electron?

A) J.J Thomson B) Max Born
C) Antoine Lavoisier D) Mendeleef
 
Answer & Explanation Answer: A) J.J Thomson

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Filed Under: Inventions
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Q:

A cricketer, whose bowling average was 12.4 runs/wicket takes 5 wickets for 22 runs in a match, thereby decreases his average by 0.4. The number of wickets, taken by him before this match was:

A) 78 B) 87
C) 95 D) 105
 
Answer & Explanation Answer: C) 95

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Q:

India’s first national sports university is to be set in which Indian state?

A) Bihar B) Punjab
C) Assam D) Manipur
 
Answer & Explanation Answer: D) Manipur

Explanation:

The Union Cabinet has approved an ordinance to set up India’s first national sports university in Imphal, Manipur. The proposed university will be spread over 325 acres and cost Rs 524 crore.

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Filed Under: Sports
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Q:

The maximum fixation of solar energy is done by

A) Bacteria B) Protozoa
C) Fungi D) Green plants
 
Answer & Explanation Answer: D) Green plants

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Filed Under: Chemistry
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Q:

Depletion of ozone layer causes

A) Breast cancer B) Skin cancer
C) Lung cancer D) Blood cancer
 
Answer & Explanation Answer: B) Skin cancer

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Filed Under: General Science
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Q:

If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then x2 + y2 is equal to

A) ab B) a2+b2
C) a2-b2 D) 1
 
Answer & Explanation Answer: B) a2+b2

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