"A chemical compound always contains the same elements combined together in the same proportion or ratio" is the statement of ____...? Mcqs

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"A chemical compound always contains the same elements combined together in the same proportion or ratio" is the statement of ____...?

(A) Law of Multiple Proportions
(B) Law of Conservation of Mass

(C) Law of Reciprocal Proportions
(D) Law of Constant Composition

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An area where community interacts with non-living environment is called...?

(A) Community
(B) Ecology

(C) Ecosystem
(D) Biome

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Bones Ash contain...?

(A) calcium sulphate
(B) phosphoric sulphate

(C) Calcium sulphate
(D) None of these

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How many times the sun is bigger than the size of the earth...?

(A) 69 times
(B) 89 times

(C) 99 times
(D) 109 times

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How many teeth are there in human mouth...?

(A) 30
(B) 33

(C) 32
(D) 31

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Where is the dirtiest skin of our body is located...?

(A) Feet
(B) Hands

(C) Face
(D) None of these

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Which on of the following planets orbits around the sun in a clockwise direction...?

(A) Earth
(B) Mercury

(C) Jupiter
(D) Venus

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Microphone converts sound energy into ___________...?

(A) Microwaves
(B) Electrical signals

(C) Optical Signals
(D) Heat energy

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In a compound microscope, as compared to an objective, the eyepiece lens has a focal length _____...?

(A) Zero
(B) Small

(C) Negative
(D) Large

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Newton's law of gravitation is consistent with Newton's _________ law of motion....?

(A) 1st
(B) 2nd

(C) 3rd
(D) All of them

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