Chemistry
Grade-10
Easy
Question
The only non-metal which can gain as well as loose electron is ___.
- Carbon
- Hydrogen
- Oxygen
- Chlorine
Hint:
Hydrogen
The correct answer is: Hydrogen
Hydrogen is an unique element of periodic table which can act as metal as well as non metal. Hydrogen has 1 electron so to be stable, it can gain or lose one electron.
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____
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The acids present in the royal water is:
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Match the following according to the correct order of reactivity.
| a) Potassium | i) 4 |
| b) Calcium | ii) 2 |
| c) Zinc | iii) 3 |
| d) Lead | iv) 1 |
Match the following according to the correct order of reactivity.
| a) Potassium | i) 4 |
| b) Calcium | ii) 2 |
| c) Zinc | iii) 3 |
| d) Lead | iv) 1 |
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