A glass chimney stops an oil lamp from smoking because:...? Mcqs

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A glass chimney stops an oil lamp from smoking because:...?

(A) It increases the supply of oxygen to the flame by convection
(B) The heat produced ensures complete

(C) Both to these
(D) Neither of these

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Endothermic reactions are those in which ________....?

(A) Heat is evolved
(B) Heat is absorbed

(C) Temperature increases
(D) Light is produced

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The gradual physiological adjustment to slowly changing new environmental conditions is known as _____________________...?

(A) Selection
(B) Introduction

(C) Acclimatization
(D) Quarantine

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When sugar is added to water, its boiling point:__________...?

(A) Increase
(B) Decrease

(C) Remain unchanged
(D) None of the above

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The amount of solid waste or concentration of gases other than oxygen increase in atmosphere is called...?

(A) Air pollution
(B) Ozone depletion

(C) Acid rain
(D) Greenhouse effect

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During the daytime, the air above the land gets heated up its density ____...?

(A) Increase
(B) Decrease

(C) Remain same
(D) Fluctuate

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The speed of sound is maximum in _____...?

(A) Gases
(B) Solids

(C) Liquids
(D) Plasma

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Which statement is incorrect about particles in solids...?

(A) Particles are in loose clusters
(B) Particles are closely packed

(C) Particles are in regular pattern
(D) Particles have small spaces between them

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Which of the following terms is used for species evolving from the same ancestor to different ecological niches...?

(A) Convergent evolution
(B) Divergent evolution

(C) Adaptive radiation
(D) Coevolution

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Granite is a____________...?

(A) Metamorphic rock
(B) Igneous rock

(C) Sedimentry rock
(D) None of these

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