41. Food exposed to house flies may cause
(A) T.B.
(B) Polio
(C) Diphtheria
(D) Diarrhoea
Answer:
Explanation:
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42. The deficiency of vitamin C may cause
(A) Anemia
(B) Spongy and bleeding gums
(C) Loss of sensation in limbs
(D) None of these
Answer:
Explanation:
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43. The liquid in which a solid dissolves is called a
(A) solute
(B) solvent
(C) solution
(D) element
Answer:
Explanation:
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44. Vaccination was discovered by
(A) Newton (B) Mendel (C) Edward Jenner (D) Robert Hooke
Answer:
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45. Light enters the eye through
(A) Optic nerve (B) Lens (C) Retina (D) Pupil
Answer:
Explanation: