Gk Questions with AnswersChemistry Gk Questions and Answers
| 13. | Which is used in storage batteries? | ||
|---|---|---|---|
| A. Zinc | |||
| B. Copper | |||
| C. Tin | |||
| D. Lead | |||
| Answer | ||
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| 14. | The deficiency of which one of the following leads to dental caries? | ||
|---|---|---|---|
| A. Iron | |||
| B. Zinc | |||
| C. Fluorine | |||
| D. Copper | |||
| Answer | ||
|
| 15. | Which fertilizer is assimilated directly by the plant? | ||
|---|---|---|---|
| A. Humus | |||
| B. Muriatic of potash | |||
| C. Nitro lim | |||
| D. Super phosphate | |||
| Answer | ||
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| 16. | Silicon is used in | ||
|---|---|---|---|
| A. Semiconductors | |||
| B. Transistors | |||
| C. Solar energy devices | |||
| D. All of these | |||
| Answer | ||
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