In humans, kidney is part of a system which is related
(A) Breath
(B) Transport
(C) Emissions
(D) Nutrition
Wood objects are coated on them to protect them from insects.
(A) Zinc chloride
(B) Sodium chloride
(C) Ammonium chloride
(D) Silver bromide
The number of alingusutras in a center of man is-
(A) 46
(B) 44
(C) 22
(D) 23
The cause of polio is-
(A) Bacteria
(B) Virus
(C) Insects
(D) Fungi
A normal healthy human's heart beats every minute—
(A) 60 times
(B) 78 times
(C) 120 times
(D) 72 times
Deficiency of which element causes goitre disease?
(A) Nitrogen
(B) Calcium
(C) Iodine
(D) Phosphorus
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