More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Chemistry Fsc Part 1 Chapter 5 Online Test MCQs With Answers
Question # 1
Spectrum produced due to the transition of electron from M-Shall to L-Shell is.
Choose an answer
Absorption
Emission
Continuous
X rays
Previous
Skip
Next
Question # 2
The electron in a subshell is filled according to formula.
Choose an answer
2n
2
2(2l+1)
(2l+1)
None of these
Previous
Skip
Next
Question # 3
The wave number of the light emitted by a certain source is 2 x 10
6
m. the wavelength of this light is
Choose an answer
500 nm
500 m
200 nm
5 x 10
7
m
Previous
Skip
Next
Question # 4
Rutherford's model fo atom failed because
Choose an answer
The atom did not have a nucleus and electrons.
It did not account for the attraction between protons and neutrons.
It did not account for the stability of the atom
Their is actually no space between the nucleus and the electrons.
Previous
Skip
Next
Question # 5
Hund's rule state that when electrons enter to the same sub levels they are.
Choose an answer
Singly occupied with same spin
Doubly occupy with same spin
Singly occupied with different spin
Doubly occupied with different spin
Previous
Skip
Next
Question # 6
Conduction of electricity through gases under reduced pressure is due to the transportation of.
Choose an answer
positive charge
Negative charge
Both types of charges
None of these
Previous
Skip
Next
Question # 7
In which de excitation of electron of hydrogen atom maximum energy is relaeased.
Choose an answer
From n2 to n1
From n3 to n2
From na to n1
From na to n2
Previous
Skip
Next
Question # 8
In discharge tube, properties of X-rays depend upon the nature of.
Choose an answer
Residual gas
Cathode plate
Anode plate
All of these
Previous
Skip
Next
Question # 9
The wave number of the light emitted by a certain source is 2 x 10
6
m
-1
The wave length of this light is.
Choose an answer
500 nm
500 m
200 nm
600 m
Previous
Skip
Next
Question # 10
The mass of alpha particle is equal to.
Choose an answer
Four times the mass of one proton
That of one hydrogen atom
That of one electron
That of one proton
Previous
Skip
Next
Question # 11
Quantum number values for 3p orbitals are.
Choose an answer
n = 0, l = 3
n = 3 , l = 1
n = 2, l = 1
n = 2 , l = 3
Previous
Skip
Next
Question # 12
Energy and wavelength of a photon are related as.
Choose an answer
Direct
In direct
No correlation
Inverse under root
Previous
Skip
Next
Question # 13
Orbitals having same energy are called.
Choose an answer
Hybrid orbitals
Valance orbitals
Degenerate orbitals
d- orbitals
Previous
Skip
Next
Question # 14
Positive rays were discovered by.
Choose an answer
J.J.Thomson
Goldstein
Ruther ford
William Crookes
Previous
Skip
Next
Question # 15
Maximum number of electrons in f-subshell is.
Choose an answer
2
6
10
14
Previous
Skip
Next
Question # 16
Which of the following wave properties is inversely proportional to the energy for electromagnetic radiations
Choose an answer
Frequency
Wave number
Velocity
Wave length
Previous
Skip
Next
Question # 17
Bohr's model of atom is contradicted by
Choose an answer
Planck quantum theory
Quartization of energy of electrons
Heisenberg's uncertainty principle
Quartization of angular members
Previous
Skip
Next
Question # 18
De Broglie equation treats electron to be.
Choose an answer
A particle
Wave
Both particle and wave
None of these
Previous
Skip
Next
Back