How many coloumns in the modern Periodic Table...? Mcqs

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How many coloumns in the modern Periodic Table...?

(A) 17
(B) 18

(C) 19
(D) None of these.

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Chemically finger nails are made up of ____________...?

(A) Carbohydrate
(B) Fats

(C) protein
(D) Starch

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The andromeda Galaxy is which type of the following types of galaxies ...?

(A) Elliptical
(B) Spiral

(C) Irregular
(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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The particles of a liquid...?

(A) Are tightly packed and stay in a fixed position
(B) Are free to move in a container but remain in close contact with one another

(C) Are widely spaced and move freely in any direction
(D) Are sparse and vibrate at long distances

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Male birds are ________ colorful than female birds....?

(A) Less
(B) More

(C) Equal
(D) None of these

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Pure limestone is called _______...?

(A) Aluminum Oxide
(B) Calcium Carbonate

(C) Calcium Sulphate
(D) None of these

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What is the largest cell in the human body...?

(A) Ovum
(B) RBCs

(C) Sperm cell
(D) Neuron

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_______ is called folic acid....?

(A) Vitamin B1
(B) Vitamin B6

(C) Vitamin B9
(D) Vitamin B12

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Law of conservation of mass was given by ____...?

(A) Antoine Lavoisier
(B) Joseph Black

(C) Mikhail Lomonosov
(D) Jean Stas

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