1. Who initially gave the idea of laser?
2. Who is honoured as the Father of Modern Chemistry?
3. Who invented periodic table?
4. Which gas is evolved from paddy fields and marshes?
5. Which toxic element is present in automobile exhausts?
6. Which gases cause acid rain?
Sulphur dioxide, Nitrogen oxides
Carbon dioxide, Carbon monoxide
Methane and Hydrogen
Nitrogen and Carbon monoxide
7. Which metal is used in the making of microchips?
8. Which chemical is used to make rain coats?
Poly Vinyl Chloride
9. What is the name given to plastics that cannot be recycled?
10. Which element is liquid at ordinary temperature?
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