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

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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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If a child has cholera, which environment pollution needs to be addressed...?

(A) Land
(B) Water

(C) Air
(D) None

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Aluminium powed + Nitrate Called...?

(A) Ammonal
(B) Aluminium nitrogen

(C) Nitrate solid
(D) None of these

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The average heartbeat per minute in a normal man is _________...?

(A) 50
(B) 70

(C) 80
(D) 100

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Ozone layer prevents ______________ radiation from entering the atmosphere...?

(A) Infra-red
(B) Ultraviolet

(C) X-rays
(D) Gamma rays

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Who is Considered as Father of Botany...?

(A) Aristotle
(B) Gregor Joghn Mandle

(C) Theophrastus
(D) Corlous Linnaeous

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Which is the heaviest metal...?

(A) Iron
(B) Mercury

(C) Nickel
(D) Osmium

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Saliva helps in the digestion of...?

(A) Starch
(B) Proteins

(C) Lipids
(D) Fats

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What is the range, in hertz, of the normal human hearing...?

(A) 10 Hz to 10 kHz
(B) 20 Hz to 20 kHz

(C) 2000Hz
(D) 40 Hz to 40 kHz

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A branch of medicine dealing with eyes and related diseases is called_________...?

(A) Opthalmology
(B) Obstetrics

(C) Physiology
(D) Haematology

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