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 Chemistry Questions

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Q:

Fire extinguishers emit which gas?

A) Carbon monoxide B) Chlorine
C) Carbon dioxide D) Nitrogen
 
Answer & Explanation Answer: C) Carbon dioxide

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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:

By which of the following processes are metals of high reactivity extracted from purified molten ore?

A) Reduction by an appropriate reducing agent B) Roasting
C) Electrolysis D) Calcination
 
Answer & Explanation Answer: C) Electrolysis

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Q:

The Chemical formula of Cadmium nitrate is _____.

A) Cd(NO3)2 B) CdNO3
C) Cd2(NO3)2 D) Cd2NO3
 
Answer & Explanation Answer: A) Cd(NO3)2

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Q:

____ is not an allotrope of carbon.

A) Buckminsterfullerene B) Carbon Dioxide
C) Diamond D) Graphite
 
Answer & Explanation Answer: B) Carbon Dioxide

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Q:

Which one of the following is a good electrical conductor?

A) Graphite B) Diamond
C) Peat D) Charcoal
 
Answer & Explanation Answer: A) Graphite

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Q:

What is the reaction between an acid and a base called?

A) Desalination B) Crystallisation
C) Neutralisation D) Sublimation
 
Answer & Explanation Answer: C) Neutralisation

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Q:

Which of the following represents an ion?

A) a particle having 9 protons, 9 neutrons, and 10 electrons B) a particle having 19 protons, 21 neutrons, and 19 electrons
C) a particle having 14 protons, 14 neutrons, and 14 electrons D) a particle having 1 proton, 3 neutrons, and 1 electron
 
Answer & Explanation Answer: A) a particle having 9 protons, 9 neutrons, and 10 electrons

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