Gk Questions with AnswersChemistry
DIRECTIONS : Questions based on Chemistry.
| 21. | What is the main constituent of coal gas? | ||
|---|---|---|---|
| A. Oxygen | |||
| B. Water | |||
| C. Nitrogen | |||
| D. Methane | |||
| 22. | For Which one of the following is the density maximum ? | ||
|---|---|---|---|
| A. Chloroform | |||
| B. Water | |||
| C. Benzene | |||
| D. Ice | |||
| 23. | The chemicals used as a fixer in phosphorous is | ||
|---|---|---|---|
| A. borax | |||
| B. sodium thiosulpahte | |||
| C. sodium sulphate | |||
| D. ammonium persulphate | |||
| 24. | Which one of the following does not contain silver? | ||
|---|---|---|---|
| A. horn silver | |||
| B. german silver | |||
| C. ruby silver | |||
| D. Lunar caustic | |||
| 25. | Which one among the following is called philosophers wool? | ||
|---|---|---|---|
| A. zinc bromide | |||
| B. zinc nitrate | |||
| C. zinc oxide | |||
| D. zinc chloride | |||