1
JEE Advanced 2024 Paper 2 Online
MCQ (Single Correct Answer)
+3
-1
Change Language
In a metal deficient oxide sample, $\mathbf{M}_{\mathbf{x}} \mathbf{Y}_2 \mathbf{O}_4$ ( $\mathbf{M}$ and $\mathbf{Y}$ are metals), $\mathbf{M}$ is present in both +2 and +3 oxidation states and $\mathbf{Y}$ is in +3 oxidation state. If the fraction of $\mathbf{M}^{2+}$ ions present in $\mathbf{M}$ is $\frac{1}{3}$, the value of $\mathbf{X}$ is _______ .
A
0.25
B
0.33
C
0.67
D
0.75
2
JEE Advanced 2024 Paper 2 Online
MCQ (Single Correct Answer)
+3
-1
Change Language

In the following reaction sequence, the major product $\mathbf{Q}$ is

JEE Advanced 2024 Paper 2 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 6 English
A
JEE Advanced 2024 Paper 2 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 6 English Option 1
B
JEE Advanced 2024 Paper 2 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 6 English Option 2
C
JEE Advanced 2024 Paper 2 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 6 English Option 3
D
JEE Advanced 2024 Paper 2 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 6 English Option 4
3
JEE Advanced 2024 Paper 2 Online
MCQ (Single Correct Answer)
+3
-1
Change Language

The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are

A
$\left[\mathrm{PF}_4\right]^{+}\left[\mathrm{PF}_6\right]^{-}$and $\left[\mathrm{PCl}_4\right]^{+}\left[\mathrm{PF}_6\right]^{-}$
B
$\left[\mathrm{PCl}_4\right]^{+}\left[\mathrm{PCl}_4 \mathrm{~F}_2\right]^{-}$and $\left[\mathrm{PCl}_4\right]^{+}\left[\mathrm{PF}_6\right]^{-}$
C
$\mathrm{PF}_3$ and $\mathrm{PCl}_3$
D
$\mathrm{PF}_5$ and $\mathrm{PCl}_3$
4
JEE Advanced 2024 Paper 2 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language

An aqueous solution of hydrazine $\left(\mathrm{N}_2 \mathrm{H}_4\right)$ is electrochemically oxidized by $\mathrm{O}_2$, thereby releasing chemical energy in the form of electrical energy. One of the products generated from the electrochemical reaction is $\mathrm{N}_2(\mathrm{~g})$.

Choose the correct statement(s) about the above process

A
$\mathrm{OH}^{-}$ions react with $\mathrm{N}_2 \mathrm{H}_4$ at the anode to form $\mathrm{N}_2(\mathrm{~g})$ and water, releasing 4 electrons to the anode.
B
At the cathode, $\mathrm{N}_2 \mathrm{H}_4$ breaks to $\mathrm{N}_2(\mathrm{~g})$ and nascent hydrogen released at the electrode reacts with oxygen to form water.
C
At the cathode, molecular oxygen gets converted to $\mathrm{OH}^{-}$.
D
Oxides of nitrogen are major by-products of the electrochemical process.
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