CUET · CHEMISTRY · PYQ PAPER 2025

The van't Hoff Factor, \(i\) for complete dissociation of (i) NaCl , (ii) \(MgSO _4\) and (iii) \(K _2 SO _4\) are

A (i) 1, (ii) 2, (iii) 3
B (i) 2, (ii) 2, (iii) 3
C (i) 3, (ii) 2, (iii) 1
D (i) 2, (ii) 3, (iii) 3

Verified Solution

Answer & Solution

Correct Answer

(B) (i) 2, (ii) 2, (iii) 3

Step-by-step Solution

Detailed explanation

(i) NaCl: \(i = 2\) (ii) \(MgSO_4\): \(i = 2\) (iii) \(K_2SO_4\): \(i = 3\)

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

Explore more questions on app

From CUET

A bag contains 8 blue and 12 green balls. Two balls are drawn in succession without replacement.
The probability that first is blue and second is green is

CUET 2025 Easy

Match List - I with List - II

List - I	List - II
(A) The number of possible matrices of order 3 × 3 with each entry 1 or 0	(I) \(2^4\)
(B) The number of possible matrices of order 2 × 3 with each entry 1 or 0	(II) \(2^9\)
(C) The number of possible matrices of order 2 × 3 with each entry 0, 1, 2	(III) \(2^6\)
(D) The number of possible matrices of order 2 × 2 with each entry 1 or 0	(IV) \(3^6\)

Choose the correct answer from the options given below:

CUET 2025 Easy

Explore more questions on app

List - I (Magnetic Property)	List - II (Substance)
(A) Ferrimagnetic	(I) MnO
(B) Antiferromagnetic	(II) \(H _2 O\)
(C) Ferromagnetic	(III) \(ZnFe _2 O _4\)
(D) Diamagnetic	(IV) \(CrO _2\)