During which process of energy exchange does cold air displace warmer air...? Mcqs

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During which process of energy exchange does cold air displace warmer air...?

(A) Convection
(B) Radiation

(C) Conduction
(D) None of these

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Which of the following is not the base quantity/quantities...?

(A) Length
(B) Mass

(C) Time
(D) Acceleration

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Skin has ___________ layers...?

(A) One
(B) Two

(C) Three
(D) Four

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Year is longest on:___________...?

(A) Jupiter
(B) Earth

(C) Mercury
(D) Mars

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Which organs of plants help in reproduction...?

(A) Stems
(B) Flowers

(C) Roots
(D) Leaves

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Increase in rate of breathing is due to the following...?

(A) Increase CO2 in blood
(B) Increase O2 in blood

(C) Decrease CO2 in blood
(D) Decrease O2 in blood

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Change of state form liquid to solid is _________...?

(A) Boiling
(B) Freezing

(C) Evaporation
(D) None of these

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A method which is used to separate coloured chemicals or substances, especially dyes is known as...?

(A) Filtration
(B) Sublimation

(C) Paper chromatography
(D) Distillation

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Which water will freeze first...?

(A) Hot
(B) Cold

(C) Both
(D) None

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Parkinson is a disease of_________...?

(A) Lungs
(B) Eyes

(C) Brain
(D) Bones

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