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1

JEE Main 2023 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Decreasing order towards SN 1 reaction for the following compounds is:

JEE Main 2023 (Online) 30th January Evening Shift Chemistry - Haloalkanes and Haloarenes Question 42 English

A

$a>c>d>b$

B

$\mathrm{d}>\mathrm{b}>\mathrm{c}>\mathrm{a}$

C

$a>b>c>d$

D

$\mathrm{b}>\mathrm{d}>\mathrm{c}>\mathrm{a}$

2

JEE Main 2023 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

$\mathrm{KMnO}_4$ oxidises $\mathrm{I}^{-}$ in acidic and neutral/faintly alkaline solutions, respectively, to :

A

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

B

$\mathrm{I}_2 ~\&~ \mathrm{I}_2$

C

$\mathrm{I}_2 ~\&~ \mathrm{IO}_3^{-}$

D

$\mathrm{IO}_3^{-} ~\&~ \mathrm{I}_2$

3

JEE Main 2023 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

JEE Main 2023 (Online) 30th January Evening Shift Chemistry - Compounds Containing Nitrogen Question 55 English

In the above conversion of compound $(\mathrm{X})$ to product $(\mathrm{Y})$, the sequence of reagents to be used will be:

A

$\begin{array}{lll}\text { (i) } \mathrm{Br}_2, \mathrm{Fe} & \text { (ii) } \mathrm{Fe}, \mathrm{H}^{+} & \text {(iii) } \mathrm{LiAIH}_4\end{array}$

B

$\begin{array}{lll}\text { (i) } \mathrm{Br}_2(\mathrm{aq}) & \text { (ii) } \mathrm{LiAIH}_4 & \text { (iii) } \mathrm{H}_3 \mathrm{O}^{+}\end{array}$

C

(i) $\mathrm{Fe}, \mathrm{H}^{+}$ (ii) $\mathrm{Br}_2$ (aq) (iii) $\mathrm{HNO}_2$ (iv) $\mathrm{H}_3 \mathrm{PO}_2$

D

(i) $\mathrm{Fe}, \mathrm{H}^{+}$ (ii) $\mathrm{Br}_2(\mathrm{aq})$ (iii) $\mathrm{HNO}_2$ (iv) $\mathrm{CuBr}$

4

JEE Main 2023 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II:

List I (Mixture)		List II (Separation Technique)
A.	$\mathrm{CHCl}_3+\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2$	I.	Steam distillation
B.	$\mathrm{C}_6 \mathrm{H}_{14}+\mathrm{C}_5 \mathrm{H}_{12}$	II.	Differential extraction
C.	$\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2+\mathrm{H}_2 \mathrm{O}$	III.	Distillation
D.	$\text { Organic compound in } \mathrm{H}_2 \mathrm{O}$	IV.	Fractional distillation

A

A-III, B-I, C-IV, D-II

B

A-II, B-I, C-III, D-IV

C

A-IV, B-I, C-III, D-II

D

A-III, B-IV, C-I, D-II

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