The most abundant constituent in Air is ______...? Mcqs

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The most abundant constituent in Air is ______...?

(A) Hydrogen
(B) Oxygen

(C) Nitrogen
(D) Carbon Dioxide

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For the generation of biogas, the materials commonly used are__________...?

(A) Animal wastes
(B) Forest residues

(C) Aquatic plants
(D) None of these

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The soul of chemistry is dealing with___________...?

(A) Internal structural changes in matter
(B) Composition of matter

(C) Properties of matter
(D) Composition and properties of matter

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Most crucial step in natural growth in nutrient cycle is...?

(A) Nutrient cycle
(B) water cycle

(C) Nitrogen cycle
(D) None of these

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As you go down into a well, your weight__________...?

(A) Slightly increases
(B) Slightly decreases

(C) Remains the same
(D) None of these

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The outermost layer of the Earth is called ____________...?

(A) Crust
(B) Mental

(C) Core
(D) None of these

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The owl can see most clearly in total darkness because:...?

(A) it has squint eyes
(B) it has light bulbs in its eyes provided by nature

(C) it produces infrasonic sounds
(D) it has large eyes with orbs directed forward, giving it binocular sight

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What happens when oil is burnt...?

(A) Carbon dioxide and energy will be released
(B) Carbon monoxide and water will be released

(C) Oxygen and carbon will be released
(D) Nitrogen and hydrogen will be released

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Urine is produced in __________...?

(A) Kidneys
(B) Lungs

(C) Large intestine
(D) Liver

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The evaporation of water from aerial parts of the plant especially through leaves is called...?

(A) Translocation
(B) Photosynthesis

(C) Respiration
(D) Transpiration

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