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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Pupa of butterfly is also called...?

(A) Chrysalis
(B) Eggs

(C) Larva
(D) Adult

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The number shown above the symbol of element is called...?

(A) Mass Number
(B) Valency

(C) Atomic Number
(D) Oxidation State

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Glass is made of the mixture of______________...?

(A) Quartz and Mica
(B) Sand and Salt

(C) Sand and Silicates
(D) None of these

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Which gas was discovered on the sun about 151 years ago during total solar eclipse...?

(A) Hydrogen
(B) Helium

(C) Nitrogen
(D) Flourine

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What type of a mirror is used in anti-shop-lifting-devices...?

(A) Convex mirror
(B) Concave mirror

(C) Plane mirror
(D) Both (b) and (c)

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Which of the following is not a fat soluble vitamin...?

(A) Vitamin A
(B) Vitamin D

(C) Vitamin B complex
(D) Vitamin K

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The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it...?

(A) 10%
(B) 20%

(C) 30%
(D) 50%

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A thin partially permeable layer around the animal cell which control the substances that enter and exist is called...?

(A) Cell Wall
(B) Cell Membrane

(C) Cytoplasm
(D) Nucleus

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According to Big Bang Theory, the Universe began about __________ billion years ago....?

(A) 10 – 20
(B) 20 – 30

(C) 30 – 40
(D) 40 – 50

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