DNA is a very large molecules and consists of units called...? Mcqs

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DNA is a very large molecules and consists of units called...?

(A) Amino acids
(B) Nucleotide

(C) Cells
(D) Molecules

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The gases used in different types of welding would include ___________...?

(A) Oxygen and hydrogen
(B) Oxygen, hydrogen, acetylene and nitrogen

(C) Oxygen, acetylene and argon
(D) Oxygen and acetylene

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We always see the same face of the moon, because...?

(A) It is smaller than the earth
(B) It revolves on its axis in a direction opposite to that of the earth

(C) It takes equal time for revolution around the earth and rotation on its own axis
(D) It rotates at the same speed as the earth around the sun

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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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What is the 2nd closest galaxy to the Milky Way...?

(A) Triangulum
(B) Andromeda

(C) Messier 81
(D) Whirlpool

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The color which we see when our eyes are closed...?

(A) Black
(B) Grey

(C) Eigengrau
(D) None of these

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Which of the following are made up of two or more substances that are not chemically combined...?

(A) Compounds
(B) Elements

(C) Solutions
(D) Mixtures

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Role of biotechnology in the production of food based on ___________...?

(A) Decomposition
(B) Respiration

(C) Digestion
(D) Fermentation

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The major source of quick energy is ___________...?

(A) Carbohydrates
(B) Minerals

(C) vitamins
(D) None of these

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Which salts are excessively dissolved to make temporary hard water...?

(A) CaSO4 and CaCl2
(B) KNO3 and KOH

(C) CaCO3 and Ca(OH)2
(D) Ca(HCO3)2 and Mg(HCO3)2

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