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
PPSC Chemistry Part I Physical Chemistry Online Test MCQs With Answers
Question # 1
In sodium chloride type lattice, the ratio of coordination number of cation to anion is.
Choose an answer
6:6
7:7
4:8
4:4
Previous
Skip
Next
Question # 2
The Langmuir adsorption iso therrn shows that the amount of adsorbed gas per gram of the solid is equal to.
Choose an answer
ap/1+bp
ap+1/1-bp
1+ap/1-bp
a(1+bp)
Previous
Skip
Next
Question # 3
During reaction of copper with aqueous solution of silver nitrate
Choose an answer
Silver atoms are reduced
Cu2+ ions are reduced
Silver ions are reduced
No
3
ions are reduced
Previous
Skip
Next
Question # 4
Which of the following compounds does not show dipole moment.
Choose an answer
CH3OH
HBr
CCl4
CHCl3
Previous
Skip
Next
Question # 5
The height to which a liquid will rise in an open capillary tube is inversely proportional to.
Choose an answer
Temperature of the liquid
Surface tension
Density of the liquid
Air pressure
Previous
Skip
Next
Question # 6
The pH of water 7 at 25
o
C if water is heated to 70
o
C . Which of the following should be true.
Choose an answer
pH will decrees
pH will increase
pH will remain constant
None of these
Previous
Skip
Next
Question # 7
Which of the following compounds shows optical activity
Choose an answer
Lactic acid
Maltose
Glucose
All above
Previous
Skip
Next
Question # 8
Isotopes are atoms whom nuclei have the same atomic number but different mass numbers. A specific isotope has an atomic number of 18 and a mass number of 35. How many electrons are there in the neutral atom.
Choose an answer
17
18
34
35
Previous
Skip
Next
Question # 9
Which of the following solution would have the largest depression in freezing point.
Choose an answer
1% glucose
1 % KCl
1 % AlCl3
1 % BaCl2
Previous
Skip
Next
Question # 10
The stabilization of the dispersed phase in a lyophobic sol is due to
Choose an answer
Liking for the dispersion medium
The surface tension of the medium
The formation of an electrical layer between the two phases
The viscosity of the medium
Previous
Skip
Next
Question # 11
The atomic orbitals are progressively filled in order of increasing energy. This statement is called as
Choose an answer
Hund's rule
Aufbau's rule
(n+1) rule
Planck's rule
Previous
Skip
Next
Question # 12
The pKa of acetic acid is 4.74 which implies that.
Choose an answer
pH of 1N solution is 4.74
At pH 4.74 the dissociation of acetic acid is maximum
At pH 4.74 half of the acetic acid molecules are dissociated in the solution.
At pH 4.74 the dissociation of acetic acid is minimum.
Previous
Skip
Next
Question # 13
For each value of l. the number of m velocity are.
Choose an answer
n
2
2l
(2l+1)
(n+1)
Previous
Skip
Next
Question # 14
When SI is dipped with As, it becomes
Choose an answer
Superconductor
p-type conductor
N-type conductor
None of these
Previous
Skip
Next
Question # 15
The dimensions for first order rate constant are.
Choose an answer
s-1
s mol-1
mol-1 s-1
s
Previous
Skip
Next
Question # 16
According to the Langumir isotherm , when the pressure of the gas is very large, the adsorption.
Choose an answer
Is directly proportional to pressure
Is inversely proportional to pressure
Is directly proportional to the square of the pressure.
Is independent of pressure
Previous
Skip
Next
Question # 17
The blue colour of CuSO4 disappears on adding Zn granules to it . it is because of .
Choose an answer
Oxidation of Cu atom
Oxidation of Zn
2+
Oxidation Cu
2+
Oxidation of Zn
2+
Previous
Skip
Next
Question # 18
Which of the following will be most effective int he coagulntion of
Fe (OH)3 sol.
Choose an answer
NaCl
MgSO4
AlCl3
Mg3 (PO4)2
Previous
Skip
Next
Question # 19
Reaction in which molecules absorbing light do not themselves react but induce other molecules to react are called.
Choose an answer
Chain reactions
Photosenaitized reactions
Reversible reactions
Free radical reactions
Previous
Skip
Next
Question # 20
Which of the following is an acceptable value fo the molecularity.
Choose an answer
0
2
6
3/2
Previous
Skip
Next
Question # 21
Which of the following statements is not a part of Bohr's theory of the hydrogen atom.
Choose an answer
An electron in an atom revolves aroung the nucleus only in circular paths.
An electron does not absorb energy in the stationary orbit
An electron does not emit energy in the stationary orbit
Energy is emitted or absorbed in a discrete amount from the stationary orbit
Previous
Skip
Next
Back