What is the main component of bones and teeth...? Mcqs

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What is the main component of bones and teeth...?

(A) Calcium carbonate
(B) Calcium phosphate

(C) Calcium sulphate
(D) Calcium nitrate

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The average human body contains how many pints of blood...?

(A) 3 to 5 pints
(B) 5 to 7 pints

(C) 7 to 8 pints
(D) 9 to 12 pints

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Earth observation satellites are used for _____...?

(A) TV signal broadcasting
(B) Mapping

(C) Telecommunication
(D) Space exploration

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To view dim stars, we use ______...?

(A) Compound microscope
(B) Endoscope

(C) Telescope
(D) Simple microscope

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Most drugs are excreted through_____________...?

(A) Kidney
(B) Skin

(C) Gallbladder
(D) Lungs

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For proper formation of teeth, __________ is essential...?

(A) iodine
(B) copper

(C) fluorine
(D) iron

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The SI unit of “Pressure” is ______...?

(A) Henry
(B) Pascal

(C) Joule
(D) None of these

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Gel electrophoresis is used in...?

(A) Amplifying DNA
(B) Sequencing DNA

(C) Separating DNA fragments on the basis of size
(D) Cloning DNA

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Ethyl alcohol was prepared by ______...?

(A) Ibne-Sina
(B) Al-Razi

(C) Al-Beruni
(D) Jaber bin-Hayan

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Only object of earth can be seen from Moon What it is...?

(A) Hanging Garden
(B) Light House

(C) Wall of China
(D) A Squire

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