First Atomic theory was proposed by...? Mcqs

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First Atomic theory was proposed by...?

(A) John Dalton
(B) E.Rutherford

(C) De Broglie
(D) D.I.Mendeleef

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Which of the following elements is not present abundantly in earth’s crust ...?

(A) Silicon
(B) Radium

(C) Aluminum
(D) Carbon

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Cooking gas is mixture of which two gases...?

(A) Hydrogen and oxygen
(B) Methane and CO2

(C) Methane and oxygen
(D) None of these

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It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of__________...?

(A) An equal and opposite pressure acts from inside
(B) of the height of a man

(C) of gravity
(D) Earth pulls the man upward

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Which of the following helps to change the shape of the lens in the eye...?

(A) Ciliary Muscles
(B) Extraocular Muscles

(C) Iris Muscles
(D) Conjunctiva Muscles

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What are considered the building blocks of matter...?

(A) Molecules
(B) Protons

(C) Elements
(D) Atoms

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A pair of unlike parallel forces having different lines of force produce _______...?

(A) Equilibrium
(B) Torque

(C) A couple
(D) Unstable equilibrium

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______ soil is also called Regur soil...?

(A) Desert
(B) Mountain

(C) Black
(D) Alluvial

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When the magnet is suspended freely, its north and south poles are always pointed towards...?

(A) North and South poles of earth respectively
(B) North and South poles of earth in the opposition direction

(C) East and West of earth respectively
(D) East and West of earth in opposite direction

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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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