Gk Questions with AnswersChemistry General Knowledge Questions and Answers
| 25. | The catalyst used in the preparation of sulphuric acid by contact process is | ||
|---|---|---|---|
| A. Nickel | |||
| B. Zinc | |||
| C. Vanadium (v) oxide | |||
| D. Sodium hydride | |||
| Answer | ||
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| 26. | When lime is mixed with water in limekiln, it gives | ||
|---|---|---|---|
| A. Slaked lime | |||
| B. Limestone | |||
| C. Milk of lime | |||
| D. Quick lime | |||
| Answer | ||
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| 27. | pH of 0.1 M HCL would be | ||
|---|---|---|---|
| A. 0 | |||
| B. 1 | |||
| C. -1 | |||
| D. 2 | |||
| Answer | ||
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| 28. | Hardness of water is due to the presence of soluble salts in | ||
|---|---|---|---|
| A. Calcium and Magnesium | |||
| B. Sodium and Magnesium | |||
| C. Sodium and Lead | |||
| D. Sodium and Calcium | |||
| Answer | ||
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