Metals are good conductors of electricity because they have free _____...? Mcqs

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Metals are good conductors of electricity because they have free _____...?

(A) Electrons
(B) Protons

(C) Neutrons
(D) Photons

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Frog Heart has how many chambers...?

(A) 2
(B) 3

(C) 4
(D) 5

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Which cells are responsible for vision in bright light and coloured vision...?

(A) Rod Cells
(B) Cone Cells

(C) Bipolar Cells
(D) Ganglion Cells

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What happens when you put sand, salt and sawdust in glass of water...?

(A) Salt has dissolved in water
(B) Sand sank to the bottom

(C) Sawdust floated on the top
(D) All of these

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The condition when the resistance of a circuit is zero is known as...?

(A) Closed-circuit
(B) Short circuit

(C) Open circuit
(D) Zero circuit

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Which led to the diversification of life...?

(A) Mesozoic Era
(B) Paleozoic Era

(C) Cenozoic Era
(D) Precambrian Time

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In onion pink color is due_____ ...?

(A) anthocyanin
(B) Carotene

(C) Xanthophylls
(D) None of these

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The lens which refract the parallel rays of light are called ____...?

(A) Diverging Lens
(B) Prim

(C) Cylindrical Lens
(D) Converging Lens

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Which of the following source of energy is caused by uneven heating of earth’s surface...?

(A) Wind
(B) Solar

(C) Biomass
(D) None of these

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In living organisms energy is stored in a special molecule called...?

(A) ATP
(B) NADH

(C) RNA
(D) DNA

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