How many major gases have been used in re​frig​er​a​tors since its invention...? Mcqs

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How many major gases have been used in re​frig​er​a​tors since its invention...?

(A) 2
(B) 3

(C) 4
(D) 5

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A balanced diet quality formula recommended by World Health Organization is ____________....?

(A) Carbohydrates 58% + Proteins 12% + Fats 30%
(B) Mineral+Proteins+Fats

(C) Fats+Proteins+Minerals
(D) None of these

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An abnormally great desire for food, excessive eating is called...?

(A) Dysphagia
(B) Bulimia nervosa

(C) Phagia
(D) None of the above

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If the ratio of solute to solvent is low, the solution is said to be _____...?

(A) Supersaturated
(B) Diluted

(C) Saturated
(D) Concentrated

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In the human body there are more than _____ known enzymes....?

(A) 800
(B) 1000

(C) 1200
(D) 1500

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Pluto is known as dwarf planet because which of the following reason/s:...?

(A) It has negligible mass
(B) It has not nearly round shaped

(C) It does not have always same neighbouring planet
(D) All of the above

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Sound travels about ___________times faster in water than in air....?

(A) 2
(B) 3

(C) 4
(D) 5

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In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ...?

(A) Chemical Reaction
(B) Nuclear reaction

(C) Fission nuclear reaction
(D) Fusion nuclear reaction

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Which rays are used for sterilization of medical instruments...?

(A) α-rays
(B) β-rays

(C) γ-rays
(D) x-rays

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The major ingredient of leather is__________________...?

(A) Collagen
(B) Polymer

(C) Nucleic acid
(D) None of these

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