M C Q s D r i v e

Chemistry 1488 MCQs [All-Courses]

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oost your exam preparation with our Chemistry MCQs designed for PPSC, FPSC, NTS, OTS, PTS, AJKPSC, BPSC, KPPSC, PMS, CSS, and all competitive exams.
Our content covers Basic Chemistry, Atomic Structure, Periodic Table, Chemical Reactions, Acids & Bases, Organic Chemistry, and everyday chemical concepts.

Quantum number which tells the energy of electron is________________?
A n
B 1
C m
D s
Correct Answer: n
Electrode potential of Zn is__________________?
A oxidation
B reduction
C oxidation-reduction
D depends on the nature of the coupled electrode
Correct Answer: depends on the nature of the coupled electrode
Wavelength of electron was verified by_________________?
A Moseley
B Davisson and Germer
C Einstein
D Roentgen
Correct Answer: Davisson and Germer
Potential of SHE is considered as__________________?
A zero
B unity
C constant
D multiple of 1
Correct Answer: zero
Sommerfelds modification in Bohrs model is_______________?
A Orbit is cylindrical
B Orbit is elliptical
C Orbit is longitudinal
D Orbit is asymmetrical
Correct Answer: Orbit is elliptical
E0red of an element cab be calculated by comparing it with _____________________?
A New electrode of same element
B SHE
C 1M solution of ions of respective element
D 2M solution of HCI
Correct Answer: SHE
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
Correct Answer: when electrons jump down to 5th- orbit
Salt bridge transfers_______________?
A electrons
B anion
C current
D ions
Correct Answer: ions
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
Correct Answer: 7
Right half cell contains _____________ electrode?
A A1
B Zn
C Cu
D Fe
Correct Answer: Cu