Which of the following is responsible for largest amount of oxygen on earth...? Mcqs

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Which of the following is responsible for largest amount of oxygen on earth...?

(A) Peat bogs
(B) Algae

(C) Trees
(D) None of these

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Which could be secondary and tertiary consumers...?

(A) Omnivores
(B) Herbivores

(C) Carnivores
(D) None

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If the area of the parallel plate capacitor is doubled then the capacitance will be _____...?

(A) Remain uncharged
(B) Half

(C) Double
(D) Increased two times

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‘Magnetometer’ is used to measure: ______________...?

(A) Air Pressure on Ships
(B) Electromagnetic Force in Space Devices

(C) Changes in the Earth’s Magnetic Field
(D) Changes in Oceanic Current

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____, days become shorter and nights become longer....?

(A) Summer
(B) Spring

(C) Autumn
(D) Winter

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Potassium meta-bisulphite is used as a food preservative for...?

(A) Squash
(B) Tomato Ketchup

(C) Fruit Juices
(D) Pickles

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PVC is obtained by the polymerisation of...?

(A) Propane
(B) Vinyl chloride

(C) Styrene
(D) None of these

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How many ounces in a pound...?

(A) 10
(B) 12

(C) 14
(D) 16

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Which of the following gases do plants and trees give out during photosynthesis...?

(A) Hydrogen
(B) Nitrogen

(C) Oxygen
(D) Carbon dioxide

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Moon is a__________...?

(A) Star
(B) Planet

(C) A & B
(D) Satellite

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