Chemistry MCQs

Page No. 92

Positive rays are produced__________________?


aBy burning of gas

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bBy cooling of the gas

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cBy the bombardment of cathode rays on gas molecules

✓


dFrom anode like cathode rays produced from cathode

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Colour of fluorescene produced by cathode rays depends upon________________?


aTemperature

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bPressure

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cVolume

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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

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c12

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d16

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View Answer 7

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


aPrinicipal

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bAzimuthal

✓


cMagnetic

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dSpin

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View Answer Azimuthal

Three quantum number have been derived from equation of____________________?


ade-Broglie

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bPlancks

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cSchrodinger

✓


dHeisenberg

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View Answer Schrodinger

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


aZeeman effect

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bStark effect

✓


cPhotoelectric effect

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dCompton effect

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View Answer Stark effect

When electron jump into orbit 1 then series obtained is___________________?


aLyman

✓


bPaschen

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cPfund

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dBrackett

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View Answer Lyman

Spectrum is produced due to________________?


aDifferent wavelength

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bDifferent colours

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cDifferent intensities

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dall have little contribution

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View Answer Different wavelength

Milikan used ______________ in his atomizer?


aMilk

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bHoney

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cOil

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dWater

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View Answer Oil

Electronic configuration of K is_________________?


a[Ar]4s2

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b[Ar]4s1

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c[Kr]5s1

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d[He]2s1

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View Answer [Ar]4s1

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