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
ECAT Chemistry Online Test MCQs With Answers
Question # 1
Choose an answer
Previous
Skip
Next
Question # 2
Which polymerization is free radical machanism based
Choose an answer
Addition
Condensation
Both a and b
None
Previous
Skip
Next
Question # 3
Common names of carboxylic acids are given by then:
Choose an answer
Source
Person discovered
place
habit
Previous
Skip
Next
Question # 4
Fossil fuels consist of :
Choose an answer
Coal
Natural gas
Petroleum
All of these
Previous
Skip
Next
Question # 5
Orbitals having same energy are called
Choose an answer
Hybrid orbitals
Valence orbitals
Degenerate orbitals
D-orbitals
Previous
Skip
Next
Question # 6
Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon
Choose an answer
Previous
Skip
Next
Question # 7
The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with
Choose an answer
Hund's rule
Markownikov's rule
Pauli's Exclusion principle
Auf ban principle
Previous
Skip
Next
Question # 8
Nitration of phenol gives
Choose an answer
o-nitrophenol
p-nitrophenol
m-nitrophenol
Both o and p-nitrophenol
Previous
Skip
Next
Question # 9
Calcium carbide reacts with water to produce
Choose an answer
Acetylene
Methane
Ethylene
Ethane
Previous
Skip
Next
Question # 10
Which is used to identify Cu
2+
ions
Choose an answer
Nitric acid
Sulfuric acid
NaOH
HCI
Previous
Skip
Next
Question # 11
Baking powder has which one of the following formula
Choose an answer
Na
2
CO
3
Na
2
SO
4
NaHCO
3
K
2
CO
3
Previous
Skip
Next
Question # 12
Which compound is both chiral and acidic
Choose an answer
Previous
Skip
Next
Question # 13
Which of the following fertilizers is useful for paddy rice
Choose an answer
Ammonium nitrate
Ammonium sulphate
Urea
Ammonium chloride
Previous
Skip
Next
Question # 14
When a nitrogeneous base combine with a sugar it is called
Choose an answer
Ribose
Nucleotides
Nucleoside
None
Previous
Skip
Next
Question # 15
Choose an answer
Previous
Skip
Next
Question # 16
K
b
value of NH
4
OH is 1.81 x 10
-5
and its conjugate acid has K
a
= 5.7 x 10
-10
pKb of the base is 4.74, pKa of its conjugate acid is
Choose an answer
-4.74
4.74
10
9.26
Previous
Skip
Next
Question # 17
Cracking normally gives smaller ______
Choose an answer
Alkanes
Alkenes
Alkynes
Both a and b
Previous
Skip
Next
Question # 18
Vinegar is dilute solution of:
Choose an answer
Acitic acid
Formic acid
Butyric acid
Propionic acid
Previous
Skip
Next
Question # 19
Alkyl halides on treatment with aqueous KOH give
Choose an answer
Phenol
Alcohol
Aldehyde
Ketone
Previous
Skip
Next
Question # 20
The divisibility of atom was shown by
Choose an answer
Stoney
J.J. Thomson
Millikan
Rutherford
Previous
Skip
Next
Question # 21
Transition metals form complexes due to the participation of partially filled
Choose an answer
f-orbitals
d-orbitals
s-orbitals
p-orbitals
Previous
Skip
Next
Question # 22
Which compound shows more hydrogen bonding?
Choose an answer
C
2
H
6
C
2
H
5
Cl
CH
3
----O----CH
3
C
2
H
5
OH
Previous
Skip
Next
Question # 23
Drained sewage has B.O.D
Choose an answer
More than that of water
Less than that of water
Equal to that of water
None of the above
Previous
Skip
Next
Question # 24
The major components of coal gas are
Choose an answer
Hydrogen and methane
Ethane and carbon monoxide
Nitrogen and ethane
Ethane and carbon dioxide
Previous
Skip
Next
Question # 25
A half reaction can be defines as :
Choose an answer
It always occurs at cathode.
Involves only half of a mole of electrolyte.
Occurs at one of the electrode.
Goes only half way to completion.
Previous
Skip
Next
Question # 26
In the ground state of an atom, the electron is present
Choose an answer
In the nucleus
In the second shell
Nearest to the nucleus
Farthest from the nucleus
Previous
Skip
Next
Question # 27
All C - H bond lengths of benzene ring is
Choose an answer
1.07A
°
1.09A
°
1.08A
°
None
Previous
Skip
Next
Question # 28
The conversion of chemical energy into electrical energy requires :
Choose an answer
Electrolytic cell
Galvanic cell
Voltaic cell
Both (b) and (c)
Previous
Skip
Next
Question # 29
Which of the following human activities are contaminating surface and ground waters
Choose an answer
Pesticides
Septic tanks
Petroleum and natural gas production
All of these
Previous
Skip
Next
Question # 30
With increases in temperature of 10 K of the reacting gases the rate of reaction is doubled because
Choose an answer
Increase in number of collisions
Number of molecules having energy more than Ea is doubled
Increase in order of reaction
Increase in surface area
Previous
Skip
Next
Question # 31
Choose an answer
Forward
Backward
Already in equilibrium
K
c
is never less
Previous
Skip
Next
Back