The blueness of the sky is mainly due to _____________...? Mcqs

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The blueness of the sky is mainly due to _____________...?

(A) The scattering of sunlight by air molecules
(B) The presence of water vapor

(C) Absorption of blue light by the air
(D) Emission of blue light by the atmosphere

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Which of the following is a function of Vitamin A in the body...?

(A) Vision, bone and body growth
(B) Immune defenses, maintenance of body linings and skin

(C) Normal cell development and reproduction
(D) All of the above

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A type of cell division in which spore mother cell produce spores...?

(A) Amitosis
(B) Mitosis

(C) Meiosis
(D) Both A and B

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Loss of electron and proton is called...?

(A) Oxidation reaction
(B) Reduction reaction

(C) Redox reaction
(D) All of these

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A person with which of the following blood groups can receive blood of any group...?

(A) A
(B) AB

(C) B
(D) O

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New Born Baby Brain weight is about________...?

(A) 300 grams
(B) 400 grams

(C) 250 grams
(D) None of these

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On heating the particles in the ice cubes will gain energy, move faster and change to liquid water. This is called...?

(A) Freezing
(B) Melting

(C) Boiling
(D) Condensation

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which of the following planets has no moons ...?

(A) Mars
(B) Neptune

(C) Venus
(D) None of these

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Quartz crystal in quartz watches work on the principle called...?

(A) Photoelectric effect
(B) Stark effect

(C) Thermionic effect
(D) Piezo-electric effect

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Melting Point of Tungsten is...?

(A) 1000 C
(B) 2000 C

(C) 3000 C
(D) 4000 C

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