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1
JEE Main 2025 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

Given below are two statements:

Statement I: A homoleptic octahedral complex, formed using monodentate ligands, will not show stereoisomerism.

Statement II: cis- and trans- platin are heteroleptic complexes of Pd.

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

A

Statement I is true but Statement II is false

B

Both Statement I and Statement II are true

C

Both Statement I and Statement II are false

D

Statement I is false but Statement II is true

2
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)

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

The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively :

[Fe(CN)6]3−, [FeF6]3−, [CoF6]3−, [Mn(CN)6]3−

A

1, 5, 4, 2

B

1, 4, 4, 2

C

1, 5, 5, 2

D

1, 1, 4, 2

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

'X' is the number of acidic oxides among VO2, V2O3, CrO3, V2O5 and Mn2O7. The primary valency of cobalt in
[Co(H2NCH2CH2NH2)3]2(SO4)3 is Y. The value of X + Y is _________.

A

3

B

4

C

2

D

5

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