InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Why is sodium chloride added to the solution during the prepartion of soap ? |
| Answer» sodium chloride is used to decrease the solubility of soap. | |
| 2. |
Common salt is obtained from rock salt by the process of _____ |
| Answer» Correct Answer - mining | |
| 3. |
The number of water molecules present in a molecule of copper sulphate crystal isA. 2B. 4C. 7D. 5 |
| Answer» Correct Answer - D | |
| 4. |
The property by which a crystal loses its water of crytallization is calledA. deliquescenceB. efflorescenceC. hydroscopyD. diffusion |
| Answer» Correct Answer - B | |
| 5. |
Which of the followiong substances is (are) obtained as by- product(s) during the preparation of sodium hydroxide by chlor-alkali process ?A. HydrogenB. sodium bicarbonateC. Common saltD. Chlorine |
| Answer» Correct Answer - A::D | |
| 6. |
Plaster of Paris is obtained by heating ______ |
| Answer» Correct Answer - gypsum | |
| 7. |
Which compound of calcium produces limelight ? |
| Answer» Calcium oxide (CaO) | |
| 8. |
Name the substance which when heated with chlorine gas gives bleaching powder. |
| Answer» Slaked lime `[Ca(OH)_(2)]` | |
| 9. |
What is the chemical formula of caustic soda ? |
| Answer» Correct Answer - NaOH | |
| 10. |
Baking soda is a mixture of _____ and sodium bicarbonate. |
| Answer» potassium hydrogentarte | |
| 11. |
The chemical formula of bleaching powder isA. `CaCI_(2).H_(2)O`B. Ca(OH)CIC. Ca(OCI)CID. `Ca(OCI)_(2)` |
| Answer» Correct Answer - C | |
| 12. |
Write the chemical formula of soda ash. |
| Answer» Anhydrous sodium carbonate ` (Na_(2)CO_(3))` | |