Gk Questions with AnswersGeneral Knowledge Questions and Answers
| 1. | Alum purifies muddy water by | ||
|---|---|---|---|
| A. Absorption | |||
| B. Coagulation | |||
| C. Dialysis | |||
| D. Emulsification | |||
| Answer | ||
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| 2. | Which among the following elements (metals) pollutes the air of a city having large number of automobiles? | ||
|---|---|---|---|
| A. Nickel | |||
| B. Lead | |||
| C. Chromium | |||
| D. Cadmium | |||
| Answer | ||
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| 3. | The oxide of which of the following elements is used as a coolant? | ||
|---|---|---|---|
| A. Phosphorus | |||
| B. Nitrogen | |||
| C. Carbon | |||
| D. Silicon | |||
| Answer | ||
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| 4. | Air is | ||
|---|---|---|---|
| A. Solution | |||
| B. Compound | |||
| C. Element | |||
| D. Mixture | |||
| Answer | ||
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