Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
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The Chemical formula of Ammonium nitrate is ___________.
The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 2nd group and the 4th period?
The Chemical formula of Ammonium dichromate is _____.
What is the chemical formula for Sodium Chloride (Salt)?
The absolute zero is a temperature at which _______
What is used to prevent freezing of fuel in space crafts?
What is the process of melting also called?
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