Why normal rain is slightly acidic...? Mcqs

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Why normal rain is slightly acidic...?

(A) due to presence of dust in air
(B) carbon dioxide and water in clouds react to form carbonic acid

(C) Ozone depletion
(D) All of these

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What force is involved when we rub our hands together to warm them in winter and when we rub a matchstick to ignite it...?

(A) Gravity
(B) Friction

(C) Electromagnetism
(D) Inertia

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What happens when you run a plastic comb through your dry and non-oily hair and then hold the comb above bits of paper...?

(A) Bits of paper get instantly attracted to the comb
(B) Bits of paper remain unaffected

(C) Bits of paper start to repel the comb
(D) Bits of paper start to stick to your hair

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The human heart is _______ ...?

(A) Ampullary Heart
(B) Pulsating Heart

(C) Myogenic Heart
(D) Neurogenic Heart

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Twinkling of stars is caused by ...?

(A) Reflection of light
(B) Polarization of light

(C) refraction of light
(D) Interference of light

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Dyne is a unit of _______...?

(A) Quantity
(B) Force

(C) Pressure
(D) Depth

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Which one among the following is not an example of pneumatic system...?

(A) Spray gun
(B) Bicycle pump

(C) Vacuum cleaner
(D) Car brake

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A doctor who specializes in diseases of the nose...?

(A) Rhinologist
(B) Otologist

(C) Pathologist
(D) Podiatrist

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Fuse wire is made of_____________...?

(A) 63% tin and 37% lead
(B) 63% lead and 37% tin

(C) 63% tin and 37% aluminum
(D) 63% lead and 37% aluminum

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Dioptre is used to measure...?

(A) optical power
(B) luminous intensity

(C) power
(D) distance of heavenly bodies

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