Q:

Methane an air pollutant is produced ______.

A) by action of ultraviolet light on nitrogenous compounds.	B) as a by-product of manufacturing ammoniacal fertilizers
C) by burning of coal in insufficient air	D) by digestion of food by animals

Answer & Explanation Answer: D) by digestion of food by animals

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Q:

What is the process of rust forming on iron called?

A) Rusting	B) Crystallisation
C) Shovel	D) Spade

Answer & Explanation Answer: A) Rusting

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Q:

Which of the following compounds is the strongest acid?

A) p-nitrophenol	B) phenol
C) m-nitrophenol	D) p-cresol

Answer & Explanation Answer: A) p-nitrophenol

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Q:

What is dry ice?

A) Solid Carbon dioxide	B) Solid Nitrogen dioxide
C) Solid Sulphur dioxide	D) Solid Water

Answer & Explanation Answer: A) Solid Carbon dioxide

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Q:

The Chemical formula of Acetic acid is _____.

A) CH3COH	B) CH3COOH
C) CH3COCH3	D) CH2COOH

Answer & Explanation Answer: D) CH2COOH

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Q:

For the aquatic organisms, the source of food is

A) Phytoplankton	B) Sea Weed
C) Aqua plankton	D) Zooplankton

Answer & Explanation Answer: A) Phytoplankton

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Q:

An economic system combining private and state enterprise is called as _____

A) Market economy	B) Centrally planned economy
C) Private economy	D) Mixed economy

Answer & Explanation Answer: D) Mixed economy

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Q:

Match the characteristics with their market structure:
(a) Price > MC in both short and long run
(b) Faces highly elastic demand

A) (a) Monopolistic competition, (b) Pure competition	B) (a) Pure Monopoly, (b) Monopolistic competition
C) (a) Pure competition, (b) Monopolistic competition	D) (a) Oligopoly, (b) Pure competition

Answer & Explanation Answer: B) (a) Pure Monopoly, (b) Monopolistic competition

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