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Q:

Which among the following is false about acids?

A) They give H+ ions in aqueous solution B) Most acids contain hydrogen
C) They turn blue litmus red D) They are bad conductor of electricity in aqueous solution
 
Answer & Explanation Answer: D) They are bad conductor of electricity in aqueous solution

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Q:

Which of the following is NOT a primary green house gas in the earth's atmosphere?

A) Methane B) Ozone
C) Nitrous oxide D) Hydrogen
 
Answer & Explanation Answer: D) Hydrogen

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Q:

Besides CO2, the other green house gas is

A) CH4 B) N2
C) Ar D) O2
 
Answer & Explanation Answer: A) CH4

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Q:

Release of which among the following is the primary reason for depletion of the ozone layer?

A) Nitrous oxide B) Hydrogen dioxide
C) Chlorofluro carbon D) Carbon monoxide
 
Answer & Explanation Answer: C) Chlorofluro carbon

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Q:

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

A) N2O B) AsH3
C) N2 D) C5H12
 
Answer & Explanation Answer: A) N2O

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Q:

In hydrolysis reactions compounds react with

A) carbon, causing decomposition B) glucose, causing decomposition
C) water, causing decomposition D) hydrogen, causing decomposition
 
Answer & Explanation Answer: C) water, causing decomposition

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Q:

Metals react with sodium hydroxide to produce ___________.

A) oxygen gas B) sodium
C) water D) hydrogen gas
 
Answer & Explanation Answer: D) hydrogen gas

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Q:

What is used to prevent freezing of fuel in space crafts?

A) Benzene B) Glycol
C) Acetylene D) Ester
 
Answer & Explanation Answer: B) Glycol

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