The density of Air is_____________...? Mcqs

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The density of Air is_____________...?

(A) 0.225 kg/m3
(B) 1.025 kg/m3

(C) 1.225 kg/m3
(D) 1.425 kg/m3

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In the optic fiber, the core is made of glass or plastic of relatively ______...?

(A) Zero refractive index
(B) Low refractive index

(C) High refractive index
(D) No refractive index

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The entire light is reflected into the same denser medium, which is called total...?

(A) External reflection
(B) External refraction

(C) Internal reflection
(D) Internal refraction

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Air contains maximum amount of__________...?

(A) oxygen
(B) nitrogen

(C) hydrogen
(D) carbon dioxide

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How long does it take for the moon to orbit the earth once...?

(A) 26.3 days
(B) 27.3 days

(C) 28.3 days
(D) 30.3 days

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The medical branch of science that deals with the study of skin, its functions, diseases, & treatment is ________ ...?

(A) Dermatology
(B) Dormatology

(C) Deontology
(D) Dermatoglyphics

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Which one from among the following seeds is monocot...?

(A) French Bean
(B) Maize

(C) Apple
(D) Orange

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Second layer of Earth’s atmosphere is__________...?

(A) Stratosphere
(B) Mesosphere

(C) Troposphere
(D) Thermosphere

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The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in __________ of sea water....?

(A) 1 gram
(B) 10 grams

(C) 1 kg
(D) 10 kg

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If nucleon number of potassium is 39, number of neutrons will be _______...?

(A) 39
(B) 19

(C) 20
(D) 29

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