SONAR is based on the principle of___________...? Mcqs

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SONAR is based on the principle of___________...?

(A) Echo
(B) reverberation

(C) resonance
(D) None of these

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For seeing objects at the surface of water from a submarine under water, the instrument used is ________...?

(A) Periscope
(B) Telescope

(C) Kaleidoscope
(D) Spectroscope

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In which part of the eye lies the pigment that decides the colour of the eyes of a person___...?

(A) Retina
(B) Iris

(C) Cornea
(D) Pupal

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The only non metal exists in liquid state is ___________...?

(A) Mercury
(B) Bromine

(C) Phosphorus
(D) Iodine

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Which one of the following is called the Blood Bank...?

(A) Kidneys
(B) Liver

(C) Spleen
(D) Heart

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For every two K⁺ that are actively transported inwards, how many Na⁺ are pumped out of the cell...?

(A) 1
(B) 2

(C) 3
(D) 4

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The hormone that increases the rate of heart beat and blood pressure after shock in a person is___________...?

(A) Adrenalin
(B) Gastrin

(C) Thyroxin
(D) Pancreatic

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Insulin drug was discovered by____________...?

(A) Charles Herbert Best
(B) Prof John James Rickard Macleod

(C) Sir Frederick Grant Banting
(D) Leonard Thompson

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Sickle cell anemia is a _________...?

(A) Genetic disorder
(B) virus disease

(C) bacterial disease
(D) diseases due to vitamin deficiency

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The molecular mass of Water molecule is __________...?

(A) 16amu
(B) 17amu

(C) 18amu
(D) 20amu

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