Permanent hardness of water is due to the presence of __________...? Mcqs

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Permanent hardness of water is due to the presence of __________...?

(A) Sodium bicarbonate
(B) Calcium sulfate

(C) Calcium bicarbonate
(D) None of these

Latest MCQs

One calorie is equal to how many joules...?

(A) 4184 joules
(B) 4285 joules

(C) 4286 joules
(D) 4185 joules

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The correct age of solar system is approximately __________...?

(A) 4.3 Billion years
(B) 4.4 Billion years

(C) 4.5 Billion years
(D) None of these

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Which are consumers that eat both producers and consumers...?

(A) Omnivores
(B) Herbivores

(C) Carnivores
(D) None

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Vitamin B1 is also known as____________...?

(A) Riboflavin
(B) Retinol

(C) Thiamine
(D) Niacin

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Which source contains the highest amount of iodine...?

(A) Milk
(B) Seaweed

(C) Eggs
(D) Fish

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Colourless, irregular in shape, nucleated and larger sized cell than R.B.Cs called...?

(A) Erythrocytes
(B) Platelets

(C) Leucocytes
(D) Lymphocytes

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Head to tail rule can be used to add ______ forces....?

(A) Two
(B) Three

(C) Five
(D) Any number of

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The matter of our sun is in ________ state...?

(A) Liquid
(B) Gas

(C) Solid
(D) Plasma

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Flow of electrons is called ______...?

(A) Electric Charge
(B) Electric Potential

(C) Electric Power
(D) Electric Current

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