Which of the following is usually not an airpollutant?
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What is the action of dry HCl gas on dry litmus paper?
___ is amphoteric in nature.
The work done in one complete revolution of the moon around the earth is equal to
Who discovered Pluto?
Which drug is used to cure Migraine?
There are total _________ parliamentary seats (Rajya Sabha constituency) in Sikkim.
_________ software are freely available and can be edited and customized by anyone.