Rate of evaporation of petrol is greater than that of water at room temperature because:...? Mcqs

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Rate of evaporation of petrol is greater than that of water at room temperature because:...?

(A) petrol molecules do not have any hydrogen bond
(B) petrol is an organic compound

(C) water molecules have small size
(D) petrol molecules have greater size

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Symptoms of vitamin b7 deficiency are known to ______________....?

(A) Pellagra
(B) Hair Loss

(C) Muscle weakness
(D) Xerophthalmia

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The major source of quick energy is ___________...?

(A) Carbohydrates
(B) Minerals

(C) vitamins
(D) None of these

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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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Leaves contains thin veins to transport _____...?

(A) Oxygen
(B) Carbon Dioxide

(C) Food
(D) Minerals

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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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New Born Baby Brain weight is about________...?

(A) 300 grams
(B) 400 grams

(C) 250 grams
(D) None of these

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When white light is passed through a prism, it splits into ______ colors....?

(A) 7
(B) 8

(C) 2
(D) 4

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Average salinity or ratio of salt as per kilogram of water of ocean is__________...?

(A) 35 grams
(B) 55 grams

(C) 32 grams
(D) 42 grams

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Colour of the plants is green due to the presence of _________....?

(A) Carbon dioxide
(B) Chlorophyll

(C) Urea
(D) Oxygen

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