Chemistry MCQs

Page No. 111

The unit of the rate constant (k) is same as that of rate of reaction________________?


aFirst order reaction


bSecond order reaction


cZero order reaction


dThirdorder reaction


View Answer Zero order reaction

Which of the following elements react with steam to produce H2 gas?


aPd


bNi


cSn


dAll of the above


View Answer All of the above

Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?


a6


b8


c10


d4


View Answer 10

A solution can be both____________________?


adilute and concentrated


bdilute and saturated


csaturated and unsaturated


dsaturated and super saturated



The unit of molality is__________________?


amoles dm-3


bmoles kg-1


cgram dm-3


dnone


View Answer moles kg-1

Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?


a4.0 x 10-8


b3.2 x 10-11


c2.0 x 10-8


d4.0 x 10-12


View Answer 3.2 x 10-11

Which of the following points are important in connection with equilibrium constant ?


aKc is constant at given temperature


bKc is unaffected by change in concentration of reactants or products


cKc indicates the extent of reaction but not about the rate of reaction.


dAll of the above


View Answer All of the above

Which of the following molecule is polar__________________?


aCCl4


bCO2


cBF3


dnone of the above


View Answer none of the above

Which of the following elements has greater 1st ionization energy__________________?


aB


bC


cN


dO


View Answer N

Which catalyst is used in contact process ?


aFe2O3


bV2O5


cSO3


dAg2O


View Answer V2O5

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