Splitting of spectral lines when atoms are subjected to strong electric filed is called_________________?
A. Zeeman effect
B. Stark effect
C. Photoelectric effect
D. Compton effect
Submitted by :- Jamil Ahmed
CHEMISTRY
Prepare for your upcoming test with a comprehensive collection of Chemistry multiple-choice questions (MCQs), ranging from basic to advanced topics. These Chemistry MCQs cover various sections of the subject, providing you with valuable practice and boosting your chances of scoring well in the Chemistry portion of the test. Whether you’re a student or a job seeker preparing for exams, these MCQs will prove beneficial for your test preparation.
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Quantum number which tells the energy of electron is________________?
A. n
B. 1
C. m
D. s
Submitted by :- Jamil Ahmed
Wavelength of electron was verified by_________________?
A. Moseley
B. Davisson and Germer
C. Einstein
D. Roentgen
Submitted by :- Jamil Ahmed
Sommerfelds modification in Bohr’s model is_______________?
A. Orbit is cylindrical
B. Orbit is elliptical
C. Orbit is longitudinal
D. Orbit is asymmetrical
Submitted by :- Jamil Ahmed
Pfund series are produced in the spectrum of hydrogen atom__________________?
A. when electrons jump down to 2nd- orbit
B. when electrons jump down to 3rd- orbit
C. when electrons jump down to 4th- orbit
D. when electrons jump down to 5th- orbit
Submitted by :- Jamil Ahmed
The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________?
A. 1
B. 3
C. 5
D. 7
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Rutherford bombarded _________________ particles in discovery of nucleus?
A. Gamma-rays
B. Alpha-rays
C. Beta-rays
D. X-rays
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Charge of electron was measured by__________________?
A. J.J Thomson
B. Millikan
C. Rutherford
D. Perrin
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Free neutron changes into proton with the emission of__________________?
A. Neutrino
B. Electron
C. Both A & B
D. Meson
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Increase in atomic number is observed during_________________?
A. Alpha emission
B. Beta emission
C. Both A & B
D. Radioactivity
Submitted by :- Jamil Ahmed