Which of the following is usually not an airpollutant?
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What is the number of atoms in 46 g of sodium-23 (N = Avogadro constant)?
Which of the following gas contributes the maximum to the phenomena of global warming?
Which of the following was India's first interplanetary mission?
___________ is the process of restoring a forest that once existed but was removed at some point of time in the past.
When the offices of the President and VicePresident fall vacant simultaneously, who acts as President?
Which among the following refers the existence of more than one level of Government in the Country?
ROM in computer science stands for?