Electrons in the highest energy level of an atom are called ________.
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Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?
The nitrogenous waste of Human Beings is
Which of the following is not a nitrogenous fertiliser?
Oxide of which of the following will turn red litmus blue?
Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of
_____ is the most ductile metal.
___ is amphoteric in nature.
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