Atomic Structure Mcqs
Our collections of Multiple choice questions and answers focuses on study of Atomic Structure in Chemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Medical colleges entrance exams, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate Atomic Structure in Chemistry comprehensively.
2. The letters s p d and f are used to represent which quantum numbers
Principal
Azimuthal
Magnetic
Spin
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3. The magnetic quantum number (QN) has its values determined directly by the value of
Principal (QN)
Azimuthal (QN)
Spin (QN)
Both a & b
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4. The atomic number of an element having maximum number of unpaired electrons in p-subshell is
7
10
12
16
5. The maximum number of electron in a sub shell with ? = 3fs
6
10
14
18
6. Radius of the third shell of H-atom is
5.761 A?
4.761 A?
6.671 A?
3.716 A?
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7. When an atom absorbs energy the lines in the spectrum will appear which are
Brighter
Darker
Colourless
Hard to locate
8. Colour of fluorescene produced by cathode rays depends upon
Temperature
Pressure
Volume
Composition of glass
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9. Which one is not true about cathode rays?
9.11x10-31 Kg
Cast shadow
Heat up the platinum foil
Cannot ionize
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10. Positive rays are produced
By burning of gas
By cooling of the gas
By the bombardment of cathode rays on gas molecules
From anode like cathode rays produced from cathode
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11. A fast moving neutron can eject from nitrogen
? = rays
? = rays
? = rays
Electrons
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12. Rutherfords planet like structure was defective and unsatisfactory because
Moving e- accelerate towards the nucleus
Continuous spectrum
Behavior of electron remain unexplained
All
13. The relationship between energy of a photon of light and its frequency is given by
De-Broglie duel nature of matter
Bohrs model
Plancks Quantum theory
Rutherfords atomic model
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14. Splitting of spectral lines when atom is subjected to magnetic field is called
Zeemans effect
Starks effect
Photo electric effect
Compton effect
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15. The velocity of the photon
Is independent of wavelength
Depends upon source
Depends upon its frequency
Equals to the square of amplitude
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