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 46hard
The gas used for artificial ripening of green fruit is
Question 47medium
Zone refining is used for the purification of
Question 48medium
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
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Question 49hard
The molecule which has the highest percentage of ionic character among the following is
Question 50easy
The high reactivity of fluorine is due to
Question 51medium
The iron ore magnetite consists of
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Question 52hard
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is
Question 53hard
The major constituent of air is
Question 54easy
The main chemical constituent of clay is