Which is the only gem of world made of a single element?
The only gem of world made of a single element is Diamond.
Nitric acid does not react with
All isotopes of the same element have ____________
Which one of the following forms of phosphorus is most reactive?
Calcium salts used as fertilizer is:
Which one of the following is an ohmic conductor?
The commonly used coolant in refrigerators is
Phosphorus is kept in water because
The depletion in Ozone layer is caused by ___________ .
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