1
JEE Main 2023 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: JEE Main 2023 (Online) 30th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 81 English 1 can be easily reduced using $\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}$ to JEE Main 2023 (Online) 30th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 81 English 2

Reason $\mathrm{R}: \mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}$ is used to reduce carbonyl group to $-\mathrm{CH}_{2}-$ group.

In the light of the above statements, choose the correct answer from the options given below:
A
${ \text {Both } A \text { and }} \mathrm{R}$ are true and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
B
$\mathrm{A}$ is false but $\mathrm{R}$ is true
C
A is true but $\mathrm{R}$ is false
D
Both $\mathrm{A}$ and $\mathrm{R}$ are true but $\mathrm{R}$ is not the correct explanation of $\mathrm{A}$
2
JEE Main 2023 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The most stable carbocation for the following is:

JEE Main 2023 (Online) 30th January Evening Shift Chemistry - Compounds Containing Nitrogen Question 78 English
A
b
B
d
C
c
D
a
3
JEE Main 2023 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II:

List I (Complexes) List II (Hybridisation)
A. $\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]$ I. $\mathrm{sp}^{3}$
B. $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$ II. dsp$^{2}$
C. $\left[\mathrm{Fe}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}$ III. $\mathrm{sp}^{3}\mathrm{d}^{2}$
D. $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$ IV. $\mathrm{d}^{2} \mathrm{sp}^{3}$
A
A-I, B-II, C-III, D-IV
B
A-II, B-I, C-III, D-IV
C
A-I, B-II, C-IV, D-III
D
A-II, B-I, C-IV, D-III
4
JEE Main 2023 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The $\mathrm{Cl}-\mathrm{Co}-\mathrm{Cl}$ bond angle values in a fac- $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$ complex is/are :
A
$90^{\circ} ~\&~ 120^{\circ}$
B
$90^{\circ}$
C
$180^{\circ}$
D
$90^{\circ} ~\& ~180^{\circ}$
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