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 793hard
The term 'brown air' is used for
Question 794medium
The sewage obtained from water closets and urinals is known as
Question 795easy
Which one amongst the following is not a Green House gas?
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Question 796easy
Which of the following is not a greenhouse gas ?
Question 797hard
Which is abundant in Gobar gas?
Question 798hard
Concentration of a material which is lethal to 50% animal is called
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Question 799hard
The major harmful gas emitted by automobile vehicle which causes air pollution is
Question 800medium
The major harmful gas emitted by automobile vehicles which causes air pollution is
Question 801hard
Normal rainwater is slightly acidic due to the presence of