Oxide of which of the following will turn red litmus blue?
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Which of the following gases is heavier than oxygen?
Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?
Three crops that contribute maximum to global food grain production are _________
A level of atmosphere which is composed partly of electrons and positive ions is called
There are total _________ parliamentary seats (Rajya Sabha constituency) in Tripura.
Who is the Chairman of NITI Aayog?
The work done by centripetal force is ______.