Chemistry MCQs
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Question 109medium
Which one is not a pure form of carbon?
Question 110medium
Which one is the purest form of carbon?
Question 111easy
Which type of fire extinguisher is used for petroleum fire ?
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Question 112medium
Man dies in the atmosphere of CO, because it
Question 113hard
It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of
Question 114easy
Which gas is used as fire extinguisher ?
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Question 115easy
The process which does not evolve CO2 in air is
Question 116medium
The metal used to galvanise iron to protect it from rusting is
Question 117medium
Iron is prevented from rusting by coating with zinc. This process is called as