Which of the following phenomena occur when a small amount of acid is added to water...? Mcqs

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Which of the following phenomena occur when a small amount of acid is added to water...?

(A) Precipitation and Neutralization
(B) Evaporation and Condensation

(C) Sublimation and Deposition
(D) Dilution and Ionisation

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With the increase in temperature, heat will be...?

(A) Increase
(B) Decrease

(C) Remain constant
(D) None

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In Daniel cell ____ is used as cathode....?

(A) Zn
(B) Cu

(C) Sn
(D) Pb

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Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________...?

(A) ionic substances
(B) metallic substances

(C) molecular solids
(D) covalent network solids

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What is known the cold and dense air blowing down from the mountain slope during the night__________...?

(A) Anabatic Wind
(B) Katabatic wind

(C) Lue Wind
(D) None of these

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A burning candle is an example of ______ state of matter....?

(A) Gas
(B) Liquid

(C) Solid
(D) All three

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The variety of coal in which the deposit contains recognizable traces of the original plant material is____________...?

(A) bitumen
(B) anthracite

(C) lignite
(D) peat

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A disease always has a______...?

(A) Cure
(B) Germs

(C) Cause
(D) Patient

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______ are the Breathing center of the body...?

(A) Nose
(B) Air

(C) Lungs
(D) None of these

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The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating _____________________...?

(A) Conduction of heat upward from a hot surface
(B) Convection from a hot surface

(C) Absorption of infrared energy that has been radiated from the surface
(D) Heat energy from the earth’s interior

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