Exposure to sunlight helps a person improve his health because ________...? Mcqs

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Exposure to sunlight helps a person improve his health because ________...?

(A) Resistance power increases
(B) The infrared light kills bacteria in the body

(C) The ultraviolet rays convert skin oil into Vitamin D
(D) The pigment cells in the skin get stimulated and produce a healthy tan

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If a body of mass 1 kg is moving with velocity of 1 m/sec. then K.E of the body will be...?

(A) 3 Joules
(B) 4 Joules

(C) 1/2 Joule
(D) 1 Joule

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The most suitable unit for expressing nuclear radius is_______...?

(A) Angstrom
(B) Micro

(C) Nano meter
(D) Fermi

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A solid is a state of matter _____...?

(A) Definite volume and indefinite shape
(B) Indefinite volume and definite shape

(C) Definite volume and definite shape
(D) Indefinite volume and indefinite shape

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Dioptre is used to measure...?

(A) optical power
(B) luminous intensity

(C) power
(D) distance of heavenly bodies

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Long-sight defect could be corrected by using __________ lens...?

(A) concave
(B) Convex

(C) diverging
(D) none of these

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Myopia is a defect of Human eye. it can be corrected by using a lens called...?

(A) Convex lens
(B) Concave lens

(C) Cylindrical lens
(D) Plano convex lens

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What time of day do most owls hunt...?

(A) Morning
(B) Afternoon

(C) Evening
(D) Night

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“COTTON” is grown on ___________...?

(A) Black soil
(B) Red Soil

(C) Regur Soil
(D) Alluvial Sea

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Naturally occurring enzyme used as a defense chemical by bacteria ______...?

(A) Defense protein
(B) Restriction enzyme

(C) Hydrolytic enzyme
(D) Ligase enzyme

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