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प्रश्न
Match the compounds given in Column I with their uses mentioned in Column II.
| Column I | Column II |
| (i) CaCO3 | (a) Dentistry, ornamental work |
| (ii) Ca(OH)2 | (b) Manufacture of sodium carbonate from caustic soda |
| (iii) CaO | (c) Most negative E value among alkali O metals. |
| (iv) CaSO4 | (c) Manufacture of high-quality paper |
| (d) Used in white washing |
उत्तर
| Column I | Column II |
| (i) CaCO3 | (c) Manufacture of high-quality paper |
| (ii) Ca(OH)2 | (d) Used in white washing |
| (iii) CaO | (b) Manufacture of sodium carbonate from caustic soda |
| (iv) CaSO4 | (a) Dentistry, ornamental work |
Explanation:
(i) CaCO3 is used in manufacturing of high-quality paper.
(ii) Due to the disinfectant nature of Ca(OH)2 is used in white wash.
(iii) CaO is used in the manufacture of sodium carbonate from caustic soda.
(iv) CaSO4 is used in dentistry, ornamental work and for making statues.
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