Free Vitamins practice for NEET PG and INI-CET Biochemistry, with a written explanation on every question.
7 questions · Free explanations
Showing 1–7 of 7 questions
Q1 · Thiamine Deficiency
NEET PGEasyExplanation
Thiamine deficiency causes Wernicke encephalopathy, with confusion, ophthalmoplegia and ataxia, and if untreated Korsakoff psychosis. Give thiamine before glucose to avoid precipitating Wernicke encephalopathy.
Q2 · Vitamin B12 Deficiency
NEET PGMediumExplanation
Vitamin B12 deficiency causes megaloblastic anaemia with hypersegmented neutrophils plus neurological features, namely subacute combined degeneration. Folate deficiency gives the same haematology but without neurological signs.
Q3 · Vitamin C Deficiency
NEET PGEasyExplanation
Vitamin C deficiency, or scurvy, impairs collagen synthesis, causing bleeding gums, perifollicular haemorrhages, poor wound healing and corkscrew hairs. Vitamin C is a cofactor for collagen hydroxylation.
Q4 · Vitamin D Activation
NEET PGMediumExplanation
Vitamin D is hydroxylated first in the liver to 25-hydroxyvitamin D and then in the kidney to 1,25-dihydroxyvitamin D, or calcitriol, the active form. Calcitriol increases intestinal calcium and phosphate absorption.
Q5 · Vitamin A Deficiency
EasyExplanation
Vitamin A, as retinal, is required for rhodopsin in the retina; deficiency causes night blindness, then xerophthalmia and Bitot spots. Vitamin A also maintains epithelial integrity.
Q6 · Vitamin K
MediumExplanation
Vitamin K is essential for gamma-carboxylation of clotting factors II, VII, IX and X, as well as proteins C and S. Warfarin inhibits this by blocking vitamin K epoxide reductase.
Q7 · Niacin Deficiency
HardExplanation
Pellagra, with dermatitis, diarrhoea and dementia, results from niacin deficiency. It can also occur in Hartnup disease and carcinoid syndrome, where tryptophan, a niacin precursor, is diverted or lost.
Vitamins sits within Biochemistry, which carries the same syllabus in both exams. This set runs to 7 questions, each tagged Easy, Medium or Hard, 1 of them at Hard, and 4 drawn from previous-year papers.
Answer first, then read the explanation even on the ones you got right — the reasoning is where Vitamins marks are actually won, and it is what separates a recalled fact from a question you can solve in a new form. Once the Easy set feels comfortable, filter to Hard to find the gaps Biochemistry examiners keep returning to.
FAQ
Yes. Every question and explanation in this Vitamins set is free and open — no login, no form and no payment. The explanation appears the moment you answer.
Vitamins sits within Biochemistry, which appears in the same form in both syllabuses. Metabolism, enzymes and molecular biology, distilled to the pathways and deficiency states that repeat in previous year papers.
No. No account, no password, no OTP. Answer in the browser and your answers stay on your device for the session.