Chemistry MCQs

Page No. 78

Which of the following will not change the concentration of ammonia at the equilibrium ?


aIncrease of pressure

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bIncrease of volume

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cAddition of catalyst

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dDecrease of temperature

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View Answer Addition of catalyst

AgCl dissolved with conc (2×10-2) Ksp will be__________________?


a3.6 x 10-6

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b3.6 x 10-5

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c7.2 x 10-6

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d4 x 10-4

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View Answer 4 x 10-4

If a buffer solution of higher pH than seven is to be made we use___________________?


aStrong acid and strong base

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bWeak acid and strong base

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cWeak acid and strong base

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dWeak acid and its salt with strong base

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The pH of 10-3 mol dm-3 of an aqueous solution of H2SO4 is_________________?


a3

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b2.7

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c2

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d1.5

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View Answer 2.7

The gases become non-ideal at ________________?


aHigh temperature and high pressure

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bLow temperature and low pressure

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cHigh temperature and low pressure

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dLow temperature and high pressure

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Who made volume and pressure correction to explain deviation of gases from ideal behaviour ?


aClausius

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bBoltzman

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cCharles

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dVander waal

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View Answer Vander waal

What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume ?


a98.5 atm

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b96.7 atm

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c95.8 atm

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d97.1 atm

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View Answer 98.5 atm

What do we call to sudden expansion of plasma ?


aAvogadros law

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bGrahams law of diffusion

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cJoule Thompson effect

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dDaltons law of partial pressure

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View Answer Joule Thompson effect

The highest temperature at which a substance can exist as a liquid is called its______________?


aCritical temperature

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bStandard temperature

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cAbsolute temperature

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dUpper consulate temperature

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View Answer Critical temperature

The spreading of fragrance or scent in air is due to_______________?


aDiffusion

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bEffusion

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cAttraction with air

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dLow density

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View Answer Diffusion

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