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Match List-I with List-II List-I (a) Ca(OCl)2 (b) CaSO4 · 1/2 H2O (c) CaO (d) CaCO3 List-II (i) Antacid (ii) Cement (iii) Bleach (iv) Plaster of paris Choose the most appropriate answer from the options given below:

1. a-i, b-iv, c-iii, d-ii
2. a-iii, b-ii, c-i, d-iv
3. a-iii, b-iv, c-i, d-ii
4. a-iii, b-iv, c-i, d-iv

Correct answer: a-iii, b-iv, c-i, d-ii

Solution

Ca(OCl)2 = bleaching powder (bleach, iii); CaSO4.1/2H2O = Plaster of Paris (iv); CaO neutralises acid (antacid, i); CaCO3 is a cement raw material (ii). So a-iii, b-iv, c-i, d-ii.

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