KCET · Chemistry · Polymers

Pick the wrong statement from the following :

A Sources of Vitamin \( B_{1} \) are yeast, milk, green vegetables and cereals
B Deficiency of Vitamin \( B_{6} \) (pyridoxime)results in convulsions
C Consumption of citrus fruits and green leafyvegetables in food prevents scurvy
D Deficiency of vitamin D causes xerophthalmia

Verified Solution

Answer & Solution

Correct Answer

(D) Deficiency of vitamin D causes xerophthalmia

Step-by-step Solution

Detailed explanation

Xerophthalmia is caused by deficiency of vitamin A. Symptoms of this is hardening of cornea of eye (dryness of cornea).

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

Match List-I with List-II

List-I (Complex)		List-II (Geometry)
(a)	\([\text{Co(NH}_3\text{)}_6]^{3+}\)	(i)	Trigonal bipyramidal
(b)	\([\text{NiCl}_4]^{2-}\)	(ii)	Octahedral
(c)	\([\text{Ni(CN)}_4]^{2-}\)	(iii)	Tetrahedral
(d)	\([\text{Fe(CO)}_5]\)	(iv)	Square planar

Choose the correct answer from the options given below.

KCET 2026 Medium

In the reaction
\( \mathrm{S}+\frac{3}{2} \mathrm{O}_{2} \rightarrow \mathrm{SO}_{3}+2 \times \mathrm{kJ} \) and \( \mathrm{SO}_{2}+\frac{1}{2} \mathrm{O}_{2} \rightarrow \mathrm{SO}_{3}+y \mathrm{~kJ} \)
heat of formation of \( \mathrm{SO}_{2} \) is

KCET 2015 Medium

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