1
JEE Advanced 2023 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language
The correct statement(s) related to processes involved in the extraction of metals is(are) :
A
Roasting of Malachite produces Cuprite.
B
Calcination of Calamine produces Zincite.
C
Copper pyrites is heated with silica in a reverberatory furnace to remove iron.
D
Impure silver is treated with aqueous $\mathrm{KCN}$ in the presence of oxygen followed by reduction with zinc metal.
2
JEE Advanced 2023 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language
In the following reactions, $\mathbf{P}, \mathbf{Q}, \mathbf{R}$, and $\mathbf{S}$ are the major products.

JEE Advanced 2023 Paper 1 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English 1JEE Advanced 2023 Paper 1 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English 2
The correct statement(s) about $\mathbf{P}, \mathbf{Q}, \mathbf{R}$, and $\mathbf{S}$ is(are) :
A
Both $\mathbf{P}$ and $\mathbf{Q}$ have asymmetric carbon(s).
B
Both $\mathbf{Q}$ and $\mathbf{R}$ have asymmetric carbon(s).
C
Both $\mathbf{P}$ and $\mathbf{R}$ have asymmetric carbon(s).
D
$\mathbf{P}$ has asymmetric carbon(s), $\mathbf{S}$ does not have any asymmetric carbon.
3
JEE Advanced 2023 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language
Consider the following reaction scheme and choose the correct option(s) for the major products $\mathbf{Q}$, $\mathbf{R}$ and $\mathbf{S}$.

JEE Advanced 2023 Paper 1 Online Chemistry - Alcohols, Phenols and Ethers Question 3 English
A
JEE Advanced 2023 Paper 1 Online Chemistry - Alcohols, Phenols and Ethers Question 3 English Option 1
B
JEE Advanced 2023 Paper 1 Online Chemistry - Alcohols, Phenols and Ethers Question 3 English Option 2
C
JEE Advanced 2023 Paper 1 Online Chemistry - Alcohols, Phenols and Ethers Question 3 English Option 3
D
JEE Advanced 2023 Paper 1 Online Chemistry - Alcohols, Phenols and Ethers Question 3 English Option 4
4
JEE Advanced 2023 Paper 1 Online
MCQ (Single Correct Answer)
+3
-1
Change Language
In the scheme given below, $\mathbf{X}$ and $\mathbf{Y}$, respectively, are

JEE Advanced 2023 Paper 1 Online Chemistry - d and f Block Elements Question 1 English
A
$\mathrm{CrO}_4{ }^{2-}$ and $\mathrm{Br}_2$
B
$\mathrm{MnO}_4{ }^{2-}$ and $\mathrm{Cl}_2$
C
$\mathrm{MnO}_4{ }^{-}$and $\mathrm{Cl}_2$
D
$\mathrm{MnSO}_4$ and $\mathrm{HOCl}$
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