Detergents dissolved in water help in cleaning clothes by_________...? Mcqs

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Detergents dissolved in water help in cleaning clothes by_________...?

(A) Increasing the temperature of water
(B) Reacting chemically with dirt

(C) Reducing the surface tension of water
(D) Dissolving dirt

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Radon is___________...?

(A) germon radio
(B) radio active gas

(C) artificial fibre
(D) an explosive

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Examples of Monosaccharides are ___________....?

(A) Glucose
(B) Galactose

(C) Fructose
(D) All of these

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Which metal pollute the air of a big city...?

(A) Copper
(B) Chromium

(C) Lead
(D) Cadmium

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The day and night are formed due to 'Earth' rotation on its axis from...?

(A) North to south
(B) South to North

(C) West to East
(D) East to West

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Which mineral is the present in whole wheat, bananas, peas, prunes, oysters, liver, kidney, grains and legumes...?

(A) Copper
(B) Magnesium

(C) Sodium
(D) Iron

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A force of 15 N makes an angle of 60° with horizontal. Its vertical component will be ____...?

(A) 15 N
(B) 10 N

(C) 13 N
(D) 7 N

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The second largest moon “titan” is belongs to which planet...?

(A) Uranus
(B) Venus

(C) Saturn
(D) Mercury

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Which of the following is a substance...?

(A) Sea water
(B) Brass

(C) Tape water
(D) Graphite

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Saliva helps in the digestion of...?

(A) Starch
(B) Proteins

(C) Lipids
(D) Fats

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