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

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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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Nephology is study of_____________...?

(A) Knowledge
(B) Clouds

(C) Rain
(D) None

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Which isotope is used to identity efficiency rates of organic and inorganic fertilizers...?

(A) Phosphorus - 32
(B) Carbon - 14

(C) Lead - 210
(D) Nitrogen - 15

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The most pure form of carbon among these are...?

(A) Anthracite
(B) Lampblack

(C) Graphite
(D) None of these

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The human blood is divided into__________ groups...?

(A) Two groups
(B) Three groups

(C) Four groups
(D) Five groups

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In which part of the Plant does photosynthesis take place...?

(A) Flowers
(B) Roots

(C) Stem
(D) Leaves

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Which among the following is not the stage of mitosis...?

(A) Prophase
(B) Metaphase

(C) Cytophase
(D) Anaphase

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Transfer of internal energy by collision of particles and movements of electrons within the body is called...?

(A) Conduction
(B) Convection

(C) Radiation
(D) Insulation

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Which of the following circuit elements is used to ‘block’ DC in an electronic circuit ...?

(A) Resistances
(B) Capacitance

(C) Inductance
(D) Diode

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If the electrostatic force between two electrons is F Newton, then the electrostatic force between two protons at the same distance is _____...?

(A) F
(B) 0N

(C) 2F
(D) 2/3 F

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