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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Male birds are ________ colorful than female birds....?

(A) Less
(B) More

(C) Equal
(D) None of these

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Ozone is a gas found in the layer...?

(A) Troposphere
(B) Mesosphere

(C) Stratosphere
(D) Exosphere

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The speed of sound is maximum in _____...?

(A) Gases
(B) Solids

(C) Liquids
(D) Plasma

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Angle of friction and angle of repose are...?

(A) equal to each other
(B) not equal to each other

(C) proportional to each other
(D) None of these

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The male reproductive part of the flower is called...?

(A) Stamen
(B) Pistil

(C) Carpel
(D) Anther

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The luster of diamond is due to_________...?

(A) Reflection
(B) Total internal reflection

(C) Refraction
(D) None of these

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Animals living in the Tree trunks are known as___________...?

(A) Arboreal
(B) Volant

(C) Amphibious
(D) Aquaticx

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The characteristic of sound by which we can differentiate between shrill and grave sound is _____...?

(A) Loudness
(B) Timbre

(C) Tone
(D) Pitch

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Stage of meiosis in which centromeres shorten and the paired chromatids are pulled away from one another...?

(A) Anaphase-II
(B) Metaphase-II

(C) Telophase-II
(D) Prophase-II

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