Fire extinguishers emit which gas?
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Cinnabar is an ore/mineral of
Which of the following elements has the lowest melting point?
The Chemical formula of Ammonium oxalate is _____.
The Chemical formula of Cadmium nitrate is _____.
Which of the following constitutes highest percentage of Green House gases?
Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?
The atoms of the elements having same difference between mass number and atomic number are called ______.
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