CUET · CHEMISTRY · PYQ PAPER 2023

Match List - I with List - II
List - I (Complex) List - II (Hybridisation)
(A) \([CoF_6]^{3-}\) (I) \(sp^3\)
(B) \([Co(NH_3)_6]^{3+}\) (II) \(dsp^2\)
(C) \([NiCl_4]^{2-}\) (III) \(d^2sp^3\)
(D) \([Ni(CN)_4]^{2-}\) (IV) \(sp^3d^2\)
Choose the correct answer from the options given below :

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

Verified Solution

Answer & Solution

Correct Answer

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

Step-by-step Solution

Detailed explanation

(A) \([CoF_6]^{3-}\): \(Co^{3+}\) (\(3d^6\)), \(F^-\) (weak ligand) \(\Rightarrow\) No pairing \(\Rightarrow\) \(sp^3d^2\) (B) \([Co(NH_3)_6]^{3+}\): \(Co^{3+}\) (\(3d^6\)), \(NH_3\) (strong ligand) \(\Rightarrow\) Pairing \(\Rightarrow\) \(d^2sp^3\) (C) \([NiCl_4]^{2-}\):…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Magnetic moment values for \([\text{Fe}(\text{H}_2\text{O})_6]^{3+}\) and \([\text{Fe}(\text{CN})_6]^{3-}\) are

CUET 2023 Easy

Match List-I With List-II

LISt – I (Solution)	LIST – II (Properties)
(A) Phenol and aniline	(I) Minimum boiling azeotrope
(B) Nitric acid and water	(II) Maximum boiling azeotrope
(C) Ethanol and water	(III) Hydrogen bonding
(D) Benzene and toluene	(IV) Ideal solution

Choose the correct answer from the options below:

CUET 2025 Medium

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LIST I	LIST II
A. Gatterman-Koch reaction	I. Diphenyl
B. Stephens reaction	II. Ethyl amine
C. Hoffmann Bromamide degradation	III. Benzaldehyde
D. Fittig reaction	IV. Acetaldehyde

X	0	1	2	3	4
P(X)	k	2k	3k	\(k^2\)	\(6 k^2\)

List-I	List-II
(A) k	(I) 3/7
(B) \(P(x<2)\)	(II) \(6 / 49\)
(C) \(P(X>3)\)	(III) \(1 / 7\)
(D) \(P(2 \leq X \leq 3)\)	(IV) 22/49

List - I	List - II
(A) A (adj A)	(I) \(\frac{1}{\|A\|}\)
(B) \|adj A\|	(II) \(\|A\|^n\)
(C) \(\left\|A^{-1}\right\|\)	(III) \(\|A\| I\)
(D) \(\|A(\operatorname{adj} A)\|\)	(IV) \(\|A\|^{n-1}\)

List - I (Complex)	List - II (Hybridisation)
(A) \([CoF_6]^{3-}\)	(I) \(sp^3\)
(B) \([Co(NH_3)_6]^{3+}\)	(II) \(dsp^2\)
(C) \([NiCl_4]^{2-}\)	(III) \(d^2sp^3\)
(D) \([Ni(CN)_4]^{2-}\)	(IV) \(sp^3d^2\)

Match List - I with List - IIList - I (Complex)List - II (Hybridisation)(A) \([CoF_6]^{3-}\)(I) \(sp^3\)(B) \([Co(NH_3)_6]^{3+}\)(II) \(dsp^2\)(C) \([NiCl_4]^{2-}\)(III) \(d^2sp^3\)(D) \([Ni(CN)_4]^{2-}\)(IV) \(sp^3d^2\)Choose the correct answer from the options given below :

Step-by-step Solution

Match List - I with List - II
List - I (Complex) List - II (Hybridisation)
(A) \([CoF_6]^{3-}\) (I) \(sp^3\)
(B) \([Co(NH_3)_6]^{3+}\) (II) \(dsp^2\)
(C) \([NiCl_4]^{2-}\) (III) \(d^2sp^3\)
(D) \([Ni(CN)_4]^{2-}\) (IV) \(sp^3d^2\)
Choose the correct answer from the options given below :