Chemistry · 2024
JEE Main · 30 January 2024, Shift 2 · Q80
A and B formed in the following reactions are: CrO_2 Cl_2+4 NaOH → A +2 NaCl +2 H_2 O; A +2 HCl +2 H_2 O_2 → B +3 H_2 O,
A and B formed in the following reactions are:
$$\begin{aligned}
& \mathrm{CrO}_2 \mathrm{Cl}_2+4 \mathrm{NaOH} \rightarrow \mathrm{~A}+2 \mathrm{NaCl}+2 \mathrm{H}_2 \mathrm{O} \\
& \mathrm{~A}+2 \mathrm{HCl}+2 \mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{~B}+3 \mathrm{H}_2 \mathrm{O}
\end{aligned},
$$
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \mathrm{A}=\mathrm{Na}_2 \mathrm{CrO}_4, \mathrm{~B}=\mathrm{CrO}_5$
More from d- and f-Block Elements
- The number of element from the following that do not belong to lanthanoids is Eu, Cm, Er, Tb, Yb and Lu2024
- Arrange the following elements in the increasing order of number of unpaired electrons in it. Sc Cr V Ti (E) Mn Choose the correct answer from the…2024
- Which of the following statements are correct about Zn, Cd and Hg? A. They exhibit high enthalpy of atomization as the d-subshell is full. B. Zn and…2024
- Which of the following oxidation reactions are carried out by both K_2 Cr_2 O_7 and KMnO_4 in acidic medium? A. I^- → I_2 B. S^2- → S C. Fe^2+ →…2025
- Alkaline oxidative fusion of MnO_2 gives " A " which on electrolytic oxidation in alkaline solution produces B. A and B respectively are2024
- Identity the incorrect pair from the following:2024
- Given below are two statements: Statement I: The number of pairs among [Ti^4+, V^2+],[V^2+, Mn^2+],[Mn^2+, Fe^3+] and [V^2+, Cr^2+] in which both…2026
- The correct order of first ( Δ_i H_1 ) and second ( Δ_i H_2 ) ionisation enthalpy values of Cr and Mn are: A. Δ_i H_1: Cr>Mn B. Δ_i H_2: Cr>Mn C. Δ_i…2026
JEE Main 2024 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.