The chief source of naphthalene is
1). 'Firefighting clothes' are made from
2). Mica.
3). Asbestos
4). Talc
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1. Which of the following is used for refrigeration?
2. Which of the following is a natural polymer?
3. The Bhopal gas tragedy was caused by the gas
4. An example of replenshible energy source is
5. The main active constituent of tea and coffee is
6. Alum stops bleeding in minor cuts because of
7. The electronic configuration of an atom having atomic number 20 is
9. The chemical name of rat poison is
10. Enzymes-