Galvanization of iron is carried out using
1). Zinc
2). Tin
3). Copper
4). Chromium
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1. Which of the following is used as filler in tyre of rubber ?
2. Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process :
3. Maximum permissible concentration of total hardness in drinking water is
4. The element with highest first ionisation energy is
5. The acid rain destroys vegetations because it contains
6. The element with highest ionization potential is
7. Which of the following metals occurs In free state
8. The atomic bomb is based on the principle of
9. Question 7.23:Why are halogens strong oxidising agents?
10. Which one of the following metals does not react with water to produce Hydrogen ?