The water has minimum density at _____...? Mcqs

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The water has minimum density at _____...?

(A) O°C
(B) 2°C

(C) 3°C
(D) 4°C

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When water is filled in a bottle and is allowed to freeze, the bottle breaks because...?

(A) Water expands on freezing
(B) Bottle contracts at freezing point

(C) temperature outside the bottle is less than that inside the bottle.
(D) None of the above

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The evaporation of water from aerial parts of the plant especially through leaves is called...?

(A) Translocation
(B) Photosynthesis

(C) Respiration
(D) Transpiration

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A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be ...?

(A) 6 feet
(B) 12 feet

(C) 4 feet
(D) 3 feet

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Pressure increases when ____...?

(A) Volume is increased
(B) Temperature is increased

(C) Area of contact is decreased
(D) Area of contact is increased

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Which mineral is required in a lesser amount for body function and is also part of bones...?

(A) Calcium
(B) Phosphorus

(C) Potassium
(D) Magnesium

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Which gas among the following is a major greenhouse gas...?

(A) Carbon Dioxide
(B) Nitrogen

(C) Argon
(D) Oxygen

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Transportation of water takes place through continuous tubes in roots, stem and leaves are called as...?

(A) Xylem
(B) Phloem

(C) Stomata
(D) Cambium

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A right rope walker carries a long pole to ______...?

(A) Increase his weight
(B) Raise his centre of gravity

(C) Lower his centre of gravity
(D) Keep his centre of gravity in fixed position

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Muscle fatigue is caused by the accumulation of___________...?

(A) Uric acid
(B) Lactic acid

(C) Oxalacetic acid
(D) Fyruvie acid

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