Chemistry MCQs

Page No. 107

For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?


aN2+3H2 2NH3


bH2+I2 2HI


c2NO2 N2H4


dPCI5 PCI3+CI2


View Answer 2NO2 N2H4

Atomic radius can be determined by_________________?


aX – ray diffraction


bSpectrophotometer


cOptical microscope


dElectron microscope


View Answer X – ray diffraction

Bohrs model is contradicted by__________________?


aPlancks theory


bDual nature of matter


cHeisenbergs uncertainty principle


dAll of these



Which of the following is pseudo solid_____________________?


aCaF2


bNaCl


cGlass


dDiamond


View Answer Glass

Plasma is used in_________________?


aFluorescent bulb


bNeon signs


cLasers


dAll of these


View Answer All of these

A real gas obeying vander waals equation will resemble the ideal gas if_______________________?


aBoth a and b are small


bBoth a and b are large


ca is small and b is large


da is large and b is small



A safe and more reliable method for drying the crystal is__________________?


aHot air currents


bfolds of filter paper


cOven


dVacuum desiccator


View Answer Vacuum desiccator

A limiting reactant is one which________________?


ais taken in lesser quantity in grams as compared to other reactants


bis taken in lesser quantity in volume as compared to other reactants


cgives the maximum amount of the product which is required


dgives the minimum amount of the product under consideration



Which element has same isotopes like palladium___________________?


aNickel


bCalcium


cCadmium


dTin


View Answer Calcium

The number of atoms in a molecule determines________________?


amacromolecule


bmacromolecule


cmolecularity


datomicity


View Answer atomicity

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