The audible range of normal human ear is ____...? Mcqs

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The audible range of normal human ear is ____...?

(A) 16 Hz to 20kHz
(B) 10 Hz to 31kHz

(C) 67 Hz to 45kHz
(D) 20 Hz to 20kHz

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Maximum biological damage is caused by ____________...?

(A) Gamma rays
(B) Alpha rays

(C) Beta rays
(D) Microwaves

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A simple machine that uses grooved wheels and a rope to raise, lower or move a load is known as...?

(A) Pulley
(B) Lever

(C) Incline Plane
(D) Wedge

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Heat capacity is the product of mass and _______...?

(A) Boiling point
(B) Freezing point

(C) Energy
(D) Specific heat of material

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Water present in watermelon...?

(A) 92%
(B) 93%

(C) 94%
(D) 95%

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Planets having largest amount of Carbon Dioxide is ____________...?

(A) Mercury
(B) Jupiter

(C) Mars
(D) Venus

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Which mineral is required in a lesser amount for body function and is also part of bones...?

(A) Calcium
(B) Phosphorus

(C) Potassium
(D) Magnesium

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Atmospheric pressure decrease rapidly with altitude because the air becomes_______ ...?

(A) Colder
(B) Less denser

(C) Rich in Ozone
(D) Warmer

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Each mole of ATP store energy...?

(A) 7.3 kcal/mole
(B) 7.3kj/mole

(C) 17.3kcal/mole
(D) 17.3kj/mole

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Another name for the diaphragm of microscope is...?

(A) Retina
(B) Pupil

(C) Cornea
(D) Iris

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