Which one of the following is a major greenhouse gas?
1). Carbon dioxide
2). Chloro fluorocarbon
3). Carbon monoxide
4). Freon
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1. Which base is present in soap?
2. Which of the following is used as filler in tyre of rubber
3. What is the most commonly used Substance in fluorescent tubes?
4. Hydrochloric acid is also known as
5. Which metal is extracted from seawater?
6. In addition to hydrogen, the other abundant element present on Sun’s surface is
7. Atomic number of which of the following elements is greater than that of Calcium?
8. Which of the following is used as nonstick coating for cooking utensils?
9. Glass is a