Match the following compounds (Column-I) with their uses (Column-II): S. No Column-I S. No. Column-II No. (i) \(\mathrm{Ca}(\mathrm{OH})_{2}\) (A) casts of statues (ii) \(\mathrm{NaCl}\) (B) white wash (iii) \(\mathrm{CaSO}_{4} \cdot \frac{1}{2} \mathrm{H}_{2} \mathrm{O}\) (C) antacid (iv) \(\mathrm{CaCO}_{3}\) (D) Washing soda preparation

(B) (i)-(B), (ii)-(D), (iii)-(A), (iv)-(C)

(A) (i)-(D), (ii)-(A), (iii)-(C), (iv)-(B)

(C) (i)-(B), (ii)-(C), (iii)-(D), (iv)-(A)

(D) (i)-(C), (ii)-(D), (iii)-(B), (iv)-(A)

JEE Main · 2020 · 06 Sep 2020 · Shift 2 · s-Block Elements

Match the following compounds (Column-I) with their uses (Column-II):
S.
No
Column-I
S.
No.
Column-II
No.
(i)

Ca (OH)_{2}

(A) casts of statues
(ii)

NaCl

(B) white wash
(iii)

CaSO_{4} \cdot \frac{1}{2} H_{2} O

CaCO_{3}

(D) Washing soda preparation

(A)(i)-(D), (ii)-(A), (iii)-(C), (iv)-(B)
(B)(i)-(B), (ii)-(D), (iii)-(A), (iv)-(C)✓ Correct
(C)(i)-(B), (ii)-(C), (iii)-(D), (iv)-(A)
(D)(i)-(C), (ii)-(D), (iii)-(B), (iv)-(A)

Answer: (B)

Solution

Slaked lime,

Ca (OH) X_{2}

, is used for whitewashing. Common salt,

NaCl

, is the raw material for preparing washing soda. Plaster of Paris,

CaSO X_{4} \cdot \frac{1}{2} H X_{2} O

, sets hard and is used for casts of statues and moulds. Calcium carbonate,

CaCO X_{3}

, serves as an antacid. So calcium hydroxide pairs with whitewash, sodium chloride with washing-soda preparation, plaster of Paris with casts of statues, and calcium carbonate with the antacid use.

JEE Main · 2020 · 06 Sep 2020 · Shift 2 · Single correct option

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JEE Main · 2020 · 06 Sep 2020 · Shift 2 · s-Block Elements

Solution

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