Ethyl alcohol was prepared by ______...? Mcqs

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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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The green pigment present in leaves is called...?

(A) Chloroplast
(B) Chromoplast

(C) Chlorophyll
(D) None

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A piece of matter in pure form is termed as ______...?

(A) Redical
(B) Mixture

(C) Compound
(D) Substance

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Air Conditioning Controls:___________...?

(A) Circulation of the Air
(B) Humidity

(C) Temperature
(D) All of The Above

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What happens when oil is burnt...?

(A) Carbon dioxide and energy will be released
(B) Carbon monoxide and water will be released

(C) Oxygen and carbon will be released
(D) Nitrogen and hydrogen will be released

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The neutral atoms of all of the isotopes of the same element have _______...?

(A) Different numbers of protons
(B) Exact numbers of neutrons

(C) An exact number of protons
(D) An exact number of nucleons

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How many daughter cells are produced from meiosis...?

(A) One
(B) Two

(C) Three
(D) Four

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Which among the following is responsible for producing color of human skin ___...?

(A) Insulin
(B) Vitamin K

(C) Melanin
(D) DNA

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Sound travels about ___________times faster in water than in air....?

(A) 2
(B) 3

(C) 4
(D) 5

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A measuring cylinder is used in a laboratories for measuring exact volume of a _____...?

(A) Solid
(B) Gas

(C) Powder
(D) Liquid

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