Our atmosphere comprises of __________ Nitrogen...? Mcqs

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Our atmosphere comprises of __________ Nitrogen...?

(A) 38% Nitrogen
(B) 58% Nitrogen

(C) 78% Nitrogen
(D) None of these

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The pH scale is a measure of the acidity or alkalinity of a solution, and it ranges between ____...?

(A) 1 - 10
(B) 1 - 14

(C) 5 - 15
(D) 0 - 12

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Chromosomes are made up of _____...?

(A) Proteins and Nucleic Acid
(B) Carbohydrates and Lipids

(C) Proteins and Minerals
(D) Nucleic Acid and Carbohydrates

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Matter exists in______ states....?

(A) One
(B) Three

(C) Five
(D) None of these

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The male reproductive part of the flower is called...?

(A) Stamen
(B) Pistil

(C) Carpel
(D) Anther

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Vaccination can be administered ______...?

(A) After infection
(B) Before infection

(C) During infection
(D) All are Correct

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When one atom forms cation by losing electron and other forms anion by accepting that electron then bond form between them is ______...?

(A) Covalent bond
(B) Ionic bond

(C) Coordinate covalent bond
(D) Hydrogen bond

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The number of spark plugs needed in a diesel engine is ______...?

(A) Zero
(B) 1

(C) 2
(D) 4

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Which pulls objects towards earth...?

(A) Gravity
(B) Friction

(C) Force
(D) Mass

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What are Columns in Periodic table called...?

(A) Period
(B) Group

(C) Verticals
(D) Perpendiculars

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