Chemistry MCQs

Page No. 78

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


aIncrease of pressure


bIncrease of volume


cAddition of catalyst


dDecrease of temperature


View Answer Addition of catalyst

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


a3.6 x 10-6


b3.6 x 10-5


c7.2 x 10-6


d4 x 10-4


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


bWeak acid and strong base


cWeak acid and strong base


dWeak acid and its salt with strong base



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


a3


b2.7


c2


d1.5


View Answer 2.7

The gases become non-ideal at ________________?


aHigh temperature and high pressure


bLow temperature and low pressure


cHigh temperature and low pressure


dLow temperature and high pressure



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


aClausius


bBoltzman


cCharles


dVander waal


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


b96.7 atm


c95.8 atm


d97.1 atm


View Answer 98.5 atm

What do we call to sudden expansion of plasma ?


aAvogadros law


bGrahams law of diffusion


cJoule Thompson effect


dDaltons law of partial pressure


View Answer Joule Thompson effect

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


aCritical temperature


bStandard temperature


cAbsolute temperature


dUpper consulate temperature


View Answer Critical temperature

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


aDiffusion


bEffusion


cAttraction with air


dLow density


View Answer Diffusion

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