CUET · BIOLOGY · PYQ PAPER 2025

Match List-l with List-II
List-l (Genetic disorder) List-II (Characteristics)
(A) Haemophilia (I) Mutation in HBB gene
(B) Thalassemia (II) Sex-linked recessive disease
(C) Phenylketonuria (III) Aneuploidy
(D) Klinefelter's syndrome (IV) Mental retardation and reduced hair and skin pigmentation

Choose the correct answer from the options given below:

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

Verified Solution

Answer & Solution

Correct Answer

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

Step-by-step Solution

Detailed explanation

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

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.

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Match the Matrix in List - I with its Adjoint's Determinant in List - II.
List - I (Matrix A) :

LIST 1	LIST 2
(A) \(\left[\begin{array}{ll}3 & 1 \\ 4 & 2\end{array}\right]\)	(I) 9
(B) \(\left[\begin{array}{cc}5 & -1 \\ 4 & 2\end{array}\right]\)	(II) 8
(C) \(\left[\begin{array}{cc}6 & -1 \\ 2 & 1\end{array}\right]\)	(III) 14
(D) \(\left[\begin{array}{ll}4 & 1 \\ 3 & 3\end{array}\right]\)	(IV) 2

Choose the correct answer from the options given below:

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List-l (Genetic disorder)	List-II (Characteristics)
(A) Haemophilia	(I) Mutation in HBB gene
(B) Thalassemia	(II) Sex-linked recessive disease
(C) Phenylketonuria	(III) Aneuploidy
(D) Klinefelter's syndrome	(IV) Mental retardation and reduced hair and skin pigmentation