An example of major air pollutant is
1). Oxygen
2). Carbon monoxide
3). Helium
4). Carbon dioxide
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1. Which of the following is not a method of estimating national income?
2. An example of replenshible energy source is
3. Atomic number of which of the following elements is greater than that of Chlorine
4. The reaction of Copper Sulphate and Iron produces Iron Sulphate and __________.
5. Which one of the following is used to restore the colour of old oil paintings ?
7. Which is not a green house gas ?
8. The Bhopal tragedy was caused by the gas
10. The element used in the manufacture of safety matches is