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
A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is
Choose an answer
100
70
50
40
Previous
Skip
Next
Question # 2
The general formula of alkyl halides is
Choose an answer
C
n
H
2n
X
C
n
H
2n-1
X
C
n
H
2n+1
X
C
n
H
2n-2
X
Previous
Skip
Next
Question # 3
The fibre which contains polymers of vinylidine chloride as fibre forming substance is known as
Choose an answer
Saran fibre
Nylon
Polyester
Acetate fibre
Previous
Skip
Next
Question # 4
pH of water is 7, if 0.01 M NaOH is added, than its pH is
Choose an answer
12
14
zero
10
Previous
Skip
Next
Question # 5
Noble gases have the electronic configuration with their valance shell ns
2
np
6
except one
Choose an answer
He
Ne
Kr
Xe
Previous
Skip
Next
Question # 6
What mass of NaOH is required to prepare 2.5 dm
3
of 1.5 M NaOH solution
Choose an answer
130 g
140 g
150 g
160 g
Previous
Skip
Next
Question # 7
50 cm
3
of 0.05 molar nrea (N
2
H
4
CO) solution has % W/N concentration
Choose an answer
6%
3%
0.3 %
0.6 %
Previous
Skip
Next
Question # 8
The melting point is lowest for
Choose an answer
Be
Mg
Ca
Sr
Previous
Skip
Next
Question # 9
Oxidation number of oxygen in OF
2
is
Choose an answer
+1
-1
+2
-2
Previous
Skip
Next
Question # 10
Which of the following does not exhibit the periodicity in properties of the elements?
Choose an answer
Ionisation energy
N/P ratio
Electronegativity
Atomic radius
Previous
Skip
Next
Question # 11
Which can be used for dehydration of alcohol
Choose an answer
P
4
O
10
H
2
SO
4
H
3
PO
4
All of them
Previous
Skip
Next
Question # 12
The amount of heat evolved or absorbed in a chemical reaction indicated by balanced chemical equation at 25° and one atmospheric pressure is called
Choose an answer
Enthalpy of formation
Enthalpy of neutralization
Enthaply of combustion
Enthaply of reaction
Previous
Skip
Next
Question # 13
The oxide of beryllium is
Choose an answer
Acidic
Amphoteric
Superoxide
Basic
Previous
Skip
Next
Question # 14
The oxidation number of H is -1 in the compound
Choose an answer
H
2
O
H
3
BO
3
NaOH
NaH
Previous
Skip
Next
Question # 15
The sample being analyzed is called:
Choose an answer
Electrolyte
Residue
Undue
Filtrate
Previous
Skip
Next
Question # 16
Hydrolysis of alkyl nitriles gives:
Choose an answer
alkane
alkyl halide
alkyl nitride
carboxylic acids
Previous
Skip
Next
Question # 17
Which statement is correct for the fuel cells
Choose an answer
These cells operate at low temperature
These cells operate at low temperature
No catalyst used for the formation of water
MnO
2
is used as electrolyte
Previous
Skip
Next
Question # 18
Which of the following is an aromatic compound
Choose an answer
Propanol
Cyclohexane
Acetone
Benezene
Previous
Skip
Next
Question # 19
Which inorganic precipitate acts as semipermeable membrane?
Choose an answer
Calcium sulphate
Barium oxalate
Nickel phosphate
Copper ferrocyanide
Previous
Skip
Next
Question # 20
Pollution is
Choose an answer
Removal of top soill
Release of toxic/undesirable materials in enevironment
Conversation of energy
All the above
Previous
Skip
Next
Question # 21
The condition for standard enthalpy change is
Choose an answer
1 atm 30°C
1 atm 50°C
1 atm 25°C
760 atm 25°C
Previous
Skip
Next
Question # 22
On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives
Choose an answer
Methyl alcohol
Ethyl alcohol
Ethyl hydrogen sulphate
Methyl hydrogen sulphate
Previous
Skip
Next
Question # 23
Weakest acid among the followings is
Choose an answer
Acetic acid
Phenol
Water
Acetylene
Previous
Skip
Next
Question # 24
Nylon 6, 6 is prepared by the reaction of nexamethylene with
Choose an answer
Formic acid
Acetic acid
Adipic acid
None of these
Previous
Skip
Next
Question # 25
The number of atoms or molecules whose concentrations determine the rate of the reaction is called
Choose an answer
Molecularity
Order
Rate of reaction
Rate constant
Previous
Skip
Next
Question # 26
An example of water soluble vitamin is
Choose an answer
Vitamin D
Vitamin E
Vitamin A
Vitamin C
Previous
Skip
Next
Question # 27
The essential component of organic compound is
Choose an answer
O
C
P
N
Previous
Skip
Next
Question # 28
When alkyl halide is heated with aqueous solution of ammonia at 100°C the major product is
Choose an answer
Primary amine
Secondary amine
Tertiary amine
Mixture of amines and salt
Previous
Skip
Next
Question # 29
The reaction-method that does not give an alkane is
Choose an answer
Catalytic hydrogenation of alkanes
Wurtz reaction
Hydrolysis of alkyl magnesium bromide
Dehydrohalogenation of an alkyl halide
Previous
Skip
Next
Question # 30
The experimental relationship between a reaction rate and the concentration of reactants is known as
Choose an answer
Order
Molecularity
Rate constant
Rate law
Previous
Skip
Next
Question # 31
Hydrogen chloride molecule contains
Choose an answer
Covalent bond
Double bond
Co-ordinate bond
Electrovalent bond
Previous
Skip
Next
Back