In the Centigrade scale, the freezing point of water is _______ and the boiling point of water is ________...? Mcqs

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In the Centigrade scale, the freezing point of water is _______ and the boiling point of water is ________...?

(A) 0°C, 50°C
(B) 10°C, 100°C

(C) 0°C, 100°C
(D) 5°C, 90°C

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Calcium sulphate is known as__________...?

(A) Epsom salt
(B) Gypsum salt

(C) Blue vitriol
(D) Potash alum

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Humming bird belongs to a category called ...?

(A) Ectotherm
(B) Endotherm

(C) Exotherm
(D) Heterotherm.

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A bacterium that lives in the intestines of human beings and animals is called...?

(A) Lactobacillus acidophilus
(B) Escherichia coli

(C) Staphylococcus aureus
(D) Bacillus subtilis

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A mode of heat transfer that occurs by the mass motion of a fluid is called...?

(A) Radiation
(B) Convection

(C) Conduction
(D) None

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The condition when the resistance of a circuit is zero is known as...?

(A) Closed-circuit
(B) Short circuit

(C) Open circuit
(D) Zero circuit

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A substance which produces hydroxyl ion (OH)- in the aqueous solution is called...?

(A) Oxidizing agent
(B) Reducing agent

(C) Base
(D) Acid

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The main constituent of Pearls are: ______________...?

(A) Calcium oxide &Ammonium Chloride
(B) Calcium Carbonate &Megnesium Carbonate

(C) Aragonite & Conchiolin
(D) None of these

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Triple point of water is _________...?

(A) 271 K
(B) 272.2 K

(C) 273.16 K
(D) None of these

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How many times the sun is bigger than the size of the earth...?

(A) 69 times
(B) 89 times

(C) 99 times
(D) 109 times

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