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Nitrogen
Calcium
Oxygen
Silicon
The most abundant inert gas in the atmosphere is
The most abundant rare gas in the atmosphere is
The most common cause of pollution of air is
The most commonly used bleaching agent is
The most commonly used chemicals in the artificial rainmaking or cloud seeding are
The most electronegative element among the following is
The most electropositive elements among the following is
The most extensive, commercially useful source of thorium as monazite sand occurs in India at
The most inexpensive and commonly used variety of glass is called soda glass. It is called so because it
The most malleable metal is