Question

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

• A. (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
• B. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
• C. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
• D. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

Hint:

Calcium carbonate ($CaCO_3$) is also found in marble, limestone, and chalk.

Answer 1

The Correct Option is D

Step 1: $Ca(OCl)_2$ is Calcium Hypochlorite, the active ingredient in bleaching powder (**Bleach**).
Step 2: $CaSO_4 \cdot \frac{1}{2} H_2O$ is Calcium Sulfate Hemihydrate, known as **Plaster of Paris**.
Step 3: $CaO$ (Quicklime) is a critical component in the manufacture of **Cement**.
Step 4: $CaCO_3$ is commonly used as an **Antacid** to neutralize stomach acid.