Entry Test MCQ :: s-BLOCK ELEMENTS
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| 11. |
Which of the following sulphates is not soluble in water? |
| A. |
Sodium sulphate |
B. |
Potassium sulphate |
| C. |
Zinc sulphate |
D. |
Barium sulphate |
Answer: Option D
Explanation:
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| 12. |
The element cesium bears resemblance with |
| A. |
Ca |
B. |
Cr |
| C. |
Both of the above |
D. |
None of the above |
Answer: Option D
Explanation:
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| 13. |
The ore CaSO4.H2O has the general name |
| A. |
Gypsum |
B. |
Dolomite |
| C. |
Calcite |
D. |
Plaster of Paris |
Answer: Option A
Explanation:
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| 14. |
Downs cell is used to prepare |
| A. |
Sodium carbonate |
B. |
Sodium bicarbonate |
| C. |
Sodium metal |
D. |
Sodium hydroxide |
Answer: Option C
Explanation:
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| 15. |
Which element is produced at the cathode during the electrolysis of brine in Nelsons cell? |
Answer: Option A
Explanation:
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| 16. |
Ammonia may be prepared by heating ammonium chloride with |
| A. |
Water |
B. |
NaCl |
| C. |
Aqueous sodium hydroxide |
D. |
H2SO4 |
Answer: Option C
Explanation:
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| 17. |
Calcium carbide is prepared by heating lime with coke at |
Answer: Option D
Explanation:
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| 18. |
Crystals of Na2CO3. 10H2O when exposed to air |
| A. |
Lose water and remain solid |
B. |
Gain water and remain solid |
| C. |
Gain water and become liquid |
D. |
Remains unchanged |
Answer: Option A
Explanation:
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| 19. |
Which one of the following substances conducts electricity by the movement of ions? |
| A. |
Graphite |
B. |
Copper |
| C. |
Molten sodium chloride |
D. |
Mercury |
Answer: Option C
Explanation:
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| 20. |
Which one of the following gives white precipitate with aqueous solution of BaC?2? |
Answer: Option C
Explanation:
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