JEE Main 2024 (Online) 1st February Morning Shift | Redox Reactions Question 7 | Chemistry

JEE Main 2024 (Online) 1st February Morning Shift

MCQ (Single Correct Answer)

-1

In acidic medium, $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ shows oxidising action as represented in the half reaction:

$$ \mathrm{Cr}_2 \mathrm{O}_7{ }^{2-}+\mathrm{XH}^{+}+\mathrm{Ye}^{\ominus} \rightarrow 2 \mathrm{~A}+\mathrm{ZH}_2 \mathrm{O} $$

$\mathrm{X}, \mathrm{Y}, \mathrm{Z}$ and $\mathrm{A}$ are respectively are :

$14,7,6$ and $\mathrm{Cr}^{3+}$

$14,6,7$ and $\mathrm{Cr}^{3+}$

$8,4,6$ and $\mathrm{Cr}_2 \mathrm{O}_3$

$8,6,4$ and $\mathrm{Cr}_2 \mathrm{O}_3$

JEE Main 2024 (Online) 29th January Morning Shift

MCQ (Single Correct Answer)

-1

Chlorine undergoes disproportionation in alkaline medium as shown below :

$$\mathrm{aCl}_{2(\mathrm{~g})}+\mathrm{b} \mathrm{OH}_{(\mathrm{aq})}^{-} \rightarrow \mathrm{c} \mathrm{ClO}_{(\mathrm{aq)}}^{-}+\mathrm{d} \mathrm{Cl}_{(\mathrm{aq})}^{-}+\mathrm{e} \mathrm{H}_2 \mathrm{O}_{(\mathrm{l})}$$

The values of $$a, b, c$$ and $$d$$ in a balanced redox reaction are respectively :

3, 4, 4 and 2

1, 2, 1 and 1

2, 4, 1 and 3

2, 2, 1 and 3

JEE Main 2024 (Online) 29th January Morning Shift

MCQ (Single Correct Answer)

-1

In alkaline medium, $$\mathrm{MnO}_4^{-}$$ oxidises $$\mathrm{I}^{-}$$ to

$$I_2$$

$$\mathrm{IO}_3^{-}$$

$$\mathrm{IO}^{-}$$

$$\mathrm{IO}_4^{-}$$

JEE Main 2024 (Online) 27th January Evening Shift

MCQ (Single Correct Answer)

-1

Which of the following cannot function as an oxidising agent?

$$\mathrm{SO}_4^{2-}$$

$$\mathrm{MnO}_4^{-}$$

$$\mathrm{N}^{3-}$$

$$\mathrm{BrO}_3^{-}$$

PREVIOUS NEXT

JEE Main Subjects