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Answer: (b) Vitamin K
Solution: Blood clotting is delayed or prevented because vitamin K is unavailable to act as an essential element (a cofactor) for the coagulation (clotting).
Deficiency of which vitamin causes osteomalacia? (1) Vitamin E (2) Vitamin A (3) Vitamin D (4) Vitamin K
Ozone in troposphere prevents us from? (a) Cause photochemical smog (b) Protects from UV radiation (c) Protects from X-ray (d) Protects from greenhouse effect