Which one of the following affects the photosynthesis and growth of plants...? Mcqs

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Which one of the following affects the photosynthesis and growth of plants...?

(A) Hydrogen
(B) Oxygen

(C) Nitrogen
(D) Acid Rain

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A powder contains 100mg of a radioactive material that emits α-particles. (See in detail)...?

(A) 0mg
(B) 25mg

(C) 50mg
(D) 75mg

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Synthetic resins are used on places where _______...?

(A) Electric resistance is required
(B) Water resistance is required

(C) Adhesion is required
(D) Friction is required

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Saliva helps in the digestion of...?

(A) Starch
(B) Proteins

(C) Lipids
(D) Fats

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When a person enters a dark room from bright light he is not able to see clearly for a little while because the...?

(A) Eye is unable to adjust itself immediately
(B) Retina becomes insensitive momentarily

(C) Iris is unable to dilate the pupil immediately
(D) Distance between the lens and retina take time to adjust

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Cell death which is caused by external factor called ____...?

(A) Apoptosis
(B) Autolysis

(C) Necrosis
(D) Mitosis

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The solar wind creates a “bubble” around the solar system called...?

(A) Feliosphere
(B) Seliosphere

(C) Heliosphere
(D) Peliosphere

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Pure limestone is called _______...?

(A) Aluminum Oxide
(B) Calcium Carbonate

(C) Calcium Sulphate
(D) None of these

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How many Layers of Earth...?

(A) 2
(B) 4

(C) 6
(D) 8

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The comparison of two values is called _____...?

(A) Ratio
(B) Proportion

(C) Graph
(D) Table

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