Acid rain is caused due to pollution of atmosphere by
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_______ is an anaesthetic agent.
_____ is the major component of natural gas.
Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
What is the reaction between an acid and a base called?
______ bond holds the atoms together within a water molecule.
Name the noble gas which is placed in the third period and eighth group of the Modern Periodic table.
Who invented the modern periodic table?
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