Chemistry · 2022
JEE Main · 28 July 2022, Shift 1 · Q63
Match List - I with List - II. Choose the correct answer from the options given below:
Match List - I with List - II.
Choose the correct answer from the options given below :
| List - I | List - II | ||
| (A) | $\displaystyle \mathrm{Cd}(\mathrm{s})+2 \mathrm{Ni}(\mathrm{OH})_3(\mathrm{~s}) \rightarrow \mathrm{CdO}(\mathrm{s})+2 \mathrm{Ni}(\mathrm{OH})_2(\mathrm{~s})+\mathrm{H}_2 \mathrm{O}(\mathrm{l})$ | (I) | Primary battery |
| (B) | $\displaystyle \mathrm{Zn}(\mathrm{Hg})+\mathrm{HgO}(\mathrm{s}) \rightarrow \mathrm{ZnO}(\mathrm{s})+\mathrm{Hg}(\mathrm{l})$ | (II) | Discharging of secondary battery |
| (C) | $\displaystyle 2 \mathrm{PbSO}_4(\mathrm{~s})+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Pb}(\mathrm{s})+\mathrm{PbO}_2(\mathrm{~s})+2 \mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq})$ | (III) | Fuel cell |
| (D) | $\displaystyle 2 \mathrm{H}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$ | (IV) | Charging of secondary battery |
Official answer
(3)
(A) - (II), (B) - (I), (C) - (IV), (D) - (III)
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.