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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In an atom, the nucleus when compared to the extra-nuclear part, is _____...?

(A) More significant in volume and heavier in mass
(B) Smaller in volume and lighter in mass

(C) Smaller in volume but heavier in mass
(D) More significant in volume but lighter in mass

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Which mineral is the present in meat, onion, eggs, iodized salt and seafood...?

(A) Calcium
(B) Iodine

(C) Magnesium
(D) Copper

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The process in which solid directly changes to gas is called...?

(A) Distillation
(B) Filtration

(C) Sublimation
(D) Crystallization

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In the atmosphere, if the temperature is low then the pressure is _________...?

(A) Low
(B) High

(C) Normal
(D) All of these

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The outermost layer of the sun is called...?

(A) Fotofera
(B) Corona

(C) Core
(D) Cromosfera

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Celestial body that affects tides of Ocean is...?

(A) Sun
(B) Moon

(C) Galaxy
(D) Meteorites

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An ordinary mobile phone communicate by using___________...?

(A) Sound waves
(B) Infrared waves

(C) UV waves
(D) Radio waves

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For about how many hours food remains in small intestine...?

(A) 2 to 6 hours
(B) 12 to 25 hours

(C) 7 to 11 hours
(D) 24 to 48 hours

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Which of these is NOT a form of energy...?

(A) Heat
(B) Light

(C) Temperature
(D) Electricity

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