1
JEE Main 2025 (Online) 7th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

Match List - I with List - II.

List - I (Complex) List - II (Primary valency and Secondary valency)
(A) [Co(en)2Cl2]Cl (I) 3,    6
(B) [Pt(NH3)2Cl(NO2)] (II) 3,    4
(C) Hg [Co(SCN)4] (III) 2,    6
(D) [Mg (EDTA)]2− (IV) 2,    4

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

2
JEE Main 2025 (Online) 7th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

The correct statements from the following are :

(A) Tl3+ is a powerful oxidising agent

(B) Al3+ does not get reduced easily

(C) Both Al3+ and Tl3+ are very stable in solution

(D) Tl1+ is more stable than Tl3+

(E) Al3+ and Tl1+ are highly stable

Choose the correct answer from the options given below :

A

(A), (B), (D) and (E) only

B

(A), (C) and (D) only

C

(A), (B), (C) and (E)

D

(B), (D) and (E) only

3
JEE Main 2025 (Online) 7th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

Given below are two statements :

Statement (I) : On hydrolysis, oligo peptides give rise to fewer number of α-amino acids while proteins give rise to a large number of β-amino acids.

Statement (II) : Natural proteins are denatured by acids which convert the water soluble form of fibrous proteins to their water insoluble form.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Statement I is incorrect but Statement II is correct

B

Both Statement I and Statement II are incorrect

C

Both Statement I and Statement II are correct

D

Statement I is correct but Statement II is incorrect

4
JEE Main 2025 (Online) 7th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

The descending order of basicity of the following amines is :

JEE Main 2025 (Online) 7th April Evening Shift Chemistry - Basics of Organic Chemistry Question 6 English 1

JEE Main 2025 (Online) 7th April Evening Shift Chemistry - Basics of Organic Chemistry Question 6 English 2

JEE Main 2025 (Online) 7th April Evening Shift Chemistry - Basics of Organic Chemistry Question 6 English 3

(D) $ \mathrm{CH}_3 \mathrm{NH}_2$

(E) $\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$

Choose the correct answer from the options given below :

A

E > A > D > C > B

B

E > D > A > B > C

C

E > D > B > A > C

D

B > E > D > A > C

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