Each day human body breathe in __________ liters of air....? Mcqs

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Each day human body breathe in __________ liters of air....?

(A) 5,000 to 10,000
(B) 10,000 to 15,000

(C) 15,000 to 20,000
(D) 20,000 to 25,000

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Vitamin C is essential for___________...?

(A) Appetite
(B) Growth & repairing of tissues

(C) Muscles
(D) Brain

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The Green House Effect is caused by an excess of ...?

(A) Carbon dioxide
(B) Carbon monoxide

(C) Carbon tetrachloride
(D) None of the above

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Comets are often called what...?

(A) Dusty snowballs
(B) Filthy snowballs

(C) Dirty snowballs
(D) Impure snowballs

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Which one of the following gases is readily soluble in water at room temperature...?

(A) Chlorine
(B) Nitrogen

(C) Ammonia
(D) Carbon dioxide

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If we dissolve sand into the water, then the mixture is said to be _______...?

(A) Solution
(B) Suspension

(C) Colloids
(D) Concentrated solution

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There are ____ types of metabolic reactions....?

(A) Two
(B) Four

(C) Three
(D) Five

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The electricity we used in our homes and schools is called...?

(A) Electric Potential (EP)
(B) Electric Resistance (ER)

(C) Direct Current (DC)
(D) Alternating Current (AC)

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Which of these is a micronutrient of plants...?

(A) Oxygen
(B) Nitrogen

(C) Boron
(D) Carbon

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An example of true solution is ______...?

(A) Solution of starch
(B) Solution of soap

(C) Ink in water
(D) Tooth paste

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