The metal, which is a constituent of vitamin B12 is____________...? Mcqs

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The metal, which is a constituent of vitamin B12 is____________...?

(A) Iron
(B) Magnesium

(C) Zinc
(D) Cobalt

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Potato, wheat, rice, corn and all types of sweet fruits contain...?

(A) Mineral
(B) Vitamin

(C) Protein
(D) Carbohydrates

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Which of the following vitamins is synthesized in the body by intestinal bacteria_______...?

(A) Vitamins B1
(B) Vitamins B12

(C) Vitamins E
(D) Vitamins K

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Freezing point of water is__________...?

(A) 0°C
(B) -2°C

(C) -4°C
(D) None of above

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T.V. transmission cannot cover a very large area because...?

(A) the strength of T.V. waves is very limited
(B) picture cannot be transmitted clearly after a specific distance

(C) the shape of the earth is spherical
(D) the air is not a good conductor of light and sound/waves

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When a bullet penetrates into a target, the kinetic energy of a bullet is converted into ...?

(A) Potential energy
(B) Heat energy

(C) Both B&D
(D) Mechanical energy

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In the Centigrade scale, the freezing point of water is _______ and the boiling point of water is ________...?

(A) 0°C, 50°C
(B) 10°C, 100°C

(C) 0°C, 100°C
(D) 5°C, 90°C

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Tendency of atoms to acquire eight electrons in their valence shell is ______...?

(A) Octet rule
(B) Duplet rule

(C) Triplet rule
(D) None of above

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A burning candle is an example of ______ state of matter....?

(A) Gas
(B) Liquid

(C) Solid
(D) All three

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In Eye donation, which part of the eye used...?

(A) Retina
(B) Iris

(C) Cornea
(D) Optic nerve

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