Which is not a green house gas ?
A). CO2
B). CH4
C). N2O
D). Chlorofluorocarbons
1. Ultraviolet radiation striking this earth is due to the depletion of
2. Question 7.23:Mention three areas in which H2SO4 plays an important role.
3. The element with highest first ionisation energy is
4. The most malleable metal is
5. Bauxite is an alloy of which of the following metals ?
6. The substance most commonly used as a food preservative is
7. The purest form of Iron is :