Chemistry MCQs

Page No. 92

Positive rays are produced__________________?


aBy burning of gas


bBy cooling of the gas


cBy the bombardment of cathode rays on gas molecules


dFrom anode like cathode rays produced from cathode



Colour of fluorescene produced by cathode rays depends upon________________?


aTemperature


bPressure


cVolume


dComposition of glass


View Answer Composition of glass

The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?


a7


b10


c12


d16


View Answer 7

The letters s p d and f are used to represent which quantum numbers________________?


aPrinicipal


bAzimuthal


cMagnetic


dSpin


View Answer Azimuthal

Three quantum number have been derived from equation of____________________?


ade-Broglie


bPlancks


cSchrodinger


dHeisenberg


View Answer Schrodinger

Splitting of spectral lines when atoms are subjected to strong electric filed is called_________________?


aZeeman effect


bStark effect


cPhotoelectric effect


dCompton effect


View Answer Stark effect

When electron jump into orbit 1 then series obtained is___________________?


aLyman


bPaschen


cPfund


dBrackett


View Answer Lyman

Spectrum is produced due to________________?


aDifferent wavelength


bDifferent colours


cDifferent intensities


dall have little contribution


View Answer Different wavelength

Milikan used ______________ in his atomizer?


aMilk


bHoney


cOil


dWater


View Answer Oil

Electronic configuration of K is_________________?


a[Ar]4s2


b[Ar]4s1


c[Kr]5s1


d[He]2s1


View Answer [Ar]4s1

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