Water Exe-3C MCQs Chemistry Class-9 ICSE Selina Publishers Solutions Chapter-3. Step By Step ICSE Selina Concise Solutions of Chapter-3 Water with All Exercise including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type, Numerical and Structured/Application Questions Solved . Visit official Website CISCE for detail information about ICSE Board Class-9.
Water Exe-3C MCQs Chemistry Class-9 ICSE Concise Selina Publishers
| Board | ICSE |
| Publications | Selina Publication |
| Subject | Chemistry |
| Class | 9th |
| Chapter-3 | Water |
| Book Name | Concise |
| Topics | Solution of (Soft and hard Water) Exercise – 3C MCQs |
| Academic Session | 2023-2024 |
Exercise – 3C MCQs
Water Class-9 Chemistry Concise Solutions
Page-54
(Choose the correct answer from the options given below)
1. Sodium sulphate is soluble in:
(i) Ether
(ii) Water
(iii) Alcohol
(iv) Benzene
Answer:
(ii) Water
2. Water acts as a universal solvent because:
(i) It is an organic compound
(ii) It is polar and has a high dielectric constant.
(iii) It is liquid at room temperature.
(iv) It boils at 100°C
Answer:
(ii) It is polar and has a high dielectric constant.
3. Permanent hardness of water is removed by:
(i) Adding calcium sulphate
(ii) Boiling with potassium chloride
(iii) Boiling
(iv) Adding sodium carbonate
Answer:
(iv) Adding sodium carbonate
4. Solid solutions are called :
(i) Allotropes
(ii) Isotopes
(iii) Alloys
(iv) Isotones
Answer:
(iii) Alloys
5. With a rise in temperature, the solubility of sodium chloride will:
(i) Increase rapidly
(ii) Decrease
(iii) Remain the same
(iv) Increase slightly
Answer:
(iv) Increase slightly
6. The solubility of which of the following substances decreases with a rise in temperature :
(i) Potassium chloride
(ii) Hydrated sodium sulphate
(iii) Calcium hydroxide
(iv) Potassium nitrate
Answer:
(iii) Calcium hydroxide
7. The crystalline substance that does not contain water of crystallization is:
(i) Plaster of paris
(ii) Potash alum
(iii) Potassium permanganate
(iv) Epsom salt
Answer:
(iii) Potassium permanganate
8. Table salt becomes sticky in the presence of moisture because :
(i) It is deliquescent
(ii) It is hygroscopic
(iii) It contains impurities which are deliquescent
(iv) It is a good drying agent.
Answer:
(iii) It contains impurities which are deliquescent
Exercise – 3C MCQs
Water Class-9 Chemistry Concise Solutions
Page-55
9. Which of the following substances can act as a dehydrating as well as a drying agent.
(i) Oxalic acid
(ii) Conc. nitric acid
(iii) Washing soda
(iv) Conc sulphuric acid
Answer:
(iv) Conc sulphuric acid
10. Which of the following is a deliquescent salt ?
(i) CuSO4
(ii) FeCl3
(iii) KCl
(iv) ZnSO4
Answer:
(ii) FeCl3
11. If a salt on heating gives water vapour, then that salt is:
(i) Hygroscopic
(ii) Deliquescent
(iii) Hydrated
(iv) Anhydrous
Answer:
(iii) Hydrated
12. The salt which is the cause of hardness in water:
(i) Sodium sulphate
(ii) Magnesium bicarbonate
(iii) Sodium chloride
(iv) Calcium nitrate
Answer:
(ii) Magnesium bicarbonate
13. Temporary hardness of water can be removed by:
(ii) Adding sodium chloride
(ii) Boiling
(iii) Adding calcium carbonate
(iv) Leaving it for a few hours.
Answer:
(i) Boiling
— : End of Water Exe-3C MCQs Answer Class-9 ICSE Chemistry Solutions :–
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