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JEE Main 20244 AprilEvening Shift
Exam
JEE Main
Year
2024
Date
4 April
Shift
Evening Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2024 · 4 April · Evening Shift · Chemistry · d and f Block Elements

When (MnO_2) and (H_2 SO_4) is added to a salt (A), the greenish...

When (\mathrm{MnO}_2) and (\mathrm{H}_2 \mathrm{SO}_4) is added to a salt (A), the greenish yellow gas liberated as salt (A) is :

Options

  1. A(\mathrm{CaI}_2)
  2. B(\mathrm{NaBr})
  3. C(\mathrm{KNO}_3)
  4. D(\mathrm{NH}_4 \mathrm{Cl})

Correct answer

D. (\mathrm{NH}_4 \mathrm{Cl})

Step-by-step solution

2NH4Cl+MnO2+2H2SO4→ΔMnSO4+(NH4)2SO4+2H2O+Cl2↑ greenish  yellow  solution \begin{aligned} & 2 \mathrm{NH}_4 \mathrm{Cl}+\mathrm{MnO}_2+2 \mathrm{H}_2 \mathrm{SO}_4 \xrightarrow{\Delta} \mathrm{MnSO}_4 \\ & +\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4+2 \mathrm{H}_2 \mathrm{O}+\underset{\substack{\text{ greenish } \\ \text{ yellow } \\ \text{ solution }}}{\mathrm{Cl}_2 \uparrow}\end{aligned}
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