Chemistry MCQs
Practice free Chemistry multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 1238 questions — no login required.
Question 190easy
The most abundant inert gas in the atmosphere is
Question 191easy
Which one of the following elements is an example of noble gas ?
Question 192hard
Helium gas is filled in balloons because
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Question 193hard
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing is
Question 194easy
At room temperature, the metal that remains liquid is:
Question 195hard
A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be
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Question 196hard
Which of the following is very reactive and kept in kerosene?
Question 197hard
Which metal does not undergo corrosion due to the formation of oxide layer?
Question 198hard
The wire of flash bulb is made of: