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Question: Answered & Verified by Expert
Match the following items in column I with the corresponding items in column II.

Chemistrys Block ElementsJEE MainJEE Main 2019 (11 Jan Shift 2)
Options:
  • A (i) $\rightarrow$ (B); (ii) $\rightarrow$ (C); (iii) $\rightarrow$ (A); (iv) $\rightarrow$ (D)
  • B (i) $\rightarrow(\mathrm{C}) ;$ (ii) $\rightarrow(\mathrm{B}) ;$ (iii) $\rightarrow(\mathrm{D}) ;$ (iv) $\rightarrow(\mathrm{A})$
  • C (i) $\rightarrow$ (D); (ii) $\rightarrow$ (A); (iii) $\rightarrow$ (B); (iv) $\rightarrow$ (C)
  • D (i) $\rightarrow$ (C); (ii) $\rightarrow$ (D); (iii) $\rightarrow$ (B); (iv) $\rightarrow$ (A)
Solution:
1714 Upvotes Verified Answer
The correct answer is: (i) $\rightarrow$ (C); (ii) $\rightarrow$ (D); (iii) $\rightarrow$ (B); (iv) $\rightarrow$ (A)
(i) $\mathrm{Na}_{2} \mathrm{CO}_{3} \cdot 10 \mathrm{H}_{2} \mathrm{O} \rightarrow$ Solvay process

(ii) $\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2} \rightarrow$ Temporary hardness

(iii) $\mathrm{NaOH} \rightarrow$ Castner-Kellner process

(iv) $\mathrm{Ca}_{3} \mathrm{Al}_{2} \mathrm{O}_{6} \rightarrow$ Portland cement

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