Gk Questions with AnswersScience General knowledge Questions
| 17. | Tetraethyl lead is used as | ||
|---|---|---|---|
| A. Pain killert | |||
| B. Mosquito repellent | |||
| C. Fire extinguisher | |||
| D. Petrol additive | |||
| Answer | ||
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| 18. | Hartley oscillators is commonly used in | ||
|---|---|---|---|
| A. Radio current | |||
| B. Camera | |||
| C. Transformer | |||
| D. Dc generators | |||
| Answer | ||
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| 19. | Carbon, diamond and graphite are together called | ||
|---|---|---|---|
| A. Allotropes | |||
| B. Isomorphs | |||
| C. Isotopes | |||
| D. Isomers | |||
| Answer | ||
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| 20. | Which of the following pairs does not contain a coinage metal? | ||
|---|---|---|---|
| A. Copper and silver | |||
| B. Zinc and gold | |||
| C. Silver and gold | |||
| D. Copper and gold | |||
| Answer | ||
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