Which of the following is a renewable source of energy ?
1). Coal
2). Geothermal powder
3). Natural gas
4). Uranium
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1. Heavy metal got their name because compared to other atoms they have
2. Vinegar is
4. Ethane gas has a slightly ______ taste.
5. The first metal used by a man was
6. Which one of the following minerals is found in Mona2ite sand ?
7. The chief constituent of vinegar is
8. Who developed Hydrogen Bomb
9. Question 3.13:Explain why cations are smaller and anions larger in radii than their parent atoms?