1
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I List II
Reaction Reagents
(A) Hoffmann Degradation (I) $$\mathrm{Conc. KOH}$$, $$\Delta$$
(B) Clemenson reduction (II) $$\mathrm{CHCl_3,NaOH/H_3O}$$$$^ \oplus $$
(C) Cannizaro reaction (III) $$\mathrm{Br_2,NaOH}$$
(D) Reimer-Tiemann Reaction (IV) $$\mathrm{Zn-Hg/HCl}$$

Choose the correct answer from the options given below :

A
(A) - III, (B) - IV, (C) - I, (D) - II
B
(A) - II, (B) - IV, (C) - I, (D) - III
C
(A) - III, (B) - IV, (C) - II, (D) - I
D
(A) - II, (B) - I, (C) - III, (D) - IV
2
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The increasing order of $$\mathrm{pK_a}$$ for the following phenols is

(A) 2, 4 - Dinitrophenol

(B) 4 - Nitrophenol

(C) 2, 4, 5 - Trimethylphenol

(D) Phenol

(E) 3-Chlorophenol

Choose the correct answer from the option given below :

A
(A), (E), (B), (D), (C)
B
(C), (E), (D), (B), (A)
C
(C), (D), (E), (B), (A)
D
(A), (B), (E), (D), (C)
3
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Chiral complex from the following is :

Here en = ethylene diamine

A
$$\mathrm{cis-[PtCl_2(en)_2]^{2+}}$$
B
$$\mathrm{trans-[Co(NH_3)_4Cl_2]^{+}}$$
C
$$\mathrm{trans-[PtCl_2(en)_2]^{2+}}$$
D
$$\mathrm{cis-[PtCl_2(NH_3)_2]}$$
4
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The standard electrode potential $$\mathrm{(M^{3+}/M^{2+})}$$ for V, Cr, Mn & Co are $$-$$0.26 V, $$-$$0.41 V, + 1.57 V and + 1.97 V, respectively. The metal ions which can liberate $$\mathrm{H_2}$$ from a dilute acid are :

A
$$\mathrm{Mn^{2+}}$$ and $$\mathrm{Co^{2+}}$$
B
$$\mathrm{V^{2+}}$$ and $$\mathrm{Mn^{2+}}$$
C
$$\mathrm{V^{2+}}$$ and $$\mathrm{Cr^{2+}}$$
D
$$\mathrm{Cr^{2+}}$$ and $$\mathrm{Co^{2+}}$$
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