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 Chemistry Questions

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Q:

What is the name of the acid in grapes?

A) Lactic acid B) Formic acid
C) Acetic acid D) Tartaric acid
 
Answer & Explanation Answer: D) Tartaric acid

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0 1937
Q:

The most serious air pollutant causing health hazard is

A) Sulphur dioxide B) Carbon monoxide
C) Ozone D) Nitrogen oxide
 
Answer & Explanation Answer: A) Sulphur dioxide

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2 1936
Q:

Kidney stones are composed of ______.

A) Calcium Oxalate B) Sodium Chloride
C) Magnesium Nitrate D) Calcium Bicarbonate
 
Answer & Explanation Answer: A) Calcium Oxalate

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0 1933
Q:

Most liquids that conduct electricity are solutions of acids, bases and ______.

A) Copper B) Aluminium
C) Salts D) Iron
 
Answer & Explanation Answer: C) Salts

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0 1933
Q:

The main mineral constituents of the continental mass are ________ and alumina.

A) iron oxide B) silica
C) water D) oxygen
 
Answer & Explanation Answer: B) silica

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2 1931
Q:

Which of the following elements has the lowest melting point?

A) Oxygen B) Platinum
C) Sodium D) Tin
 
Answer & Explanation Answer: A) Oxygen

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0 1928
Q:

Which of the following is a chemical formula of quicklime?

A) Ca2O B) Ca2CO3
C) CaO2 D) CaO
 
Answer & Explanation Answer: D) CaO

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3 1924
Q:

The absolute zero is a temperature at which _______

A) molecular motion in a gas would cease B) water freezes
C) all gases become liquid D) all gases become solid
 
Answer & Explanation Answer: A) molecular motion in a gas would cease

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1 1923