NCERT Exemplar Solutions
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Short Answer Questions
Question 32

Question. 32

32. Match the important chemicals given in Column (A) with the chemical formulae given in Column (B)

Column (A)Column (B)
(a) Plaster of Paris(i) Ca(OH)₂
(b) Gypsum(ii) CaSO₄·1/2 H₂O
(c) Bleaching Powder(iii) CaSO₄·2H₂O
(d) Slaked Lime(iv) CaOCl₂

Answer:

(a) — (ii) (b) — (iii) (c) — (iv) (d) — (i)

Detailed Answer with Explanation:

Steps: Plaster of Paris is calcium sulphate hemihydrate (CaSO₄·½H₂O). Gypsum is hydrated calcium sulphate (CaSO₄·2H₂O). Bleaching powder is calcium oxychloride (commonly written CaOCl₂). Slaked lime is Ca(OH)₂.

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