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ECAT Chemistry Online Test MCQs With Answers
Question # 1
A carboxylic acid with one caboxyl group:
Choose an answer
Monocarboxylic acid
Dicarboxylic acid
Tricarboxylic acid
Polycarboxylic acid
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Question # 2
Dehydration of allcohol gives:
Choose an answer
Alkane
Alkene
Aldehyde
ketone
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Question # 3
Ketones are prepared by the oxidation of:
Choose an answer
Primary alcohol
Secondary alcohol
Tertiary alcohol
None of these
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Question # 4
The wave number of the light emitted by a certain source is 2 x 10
6
m
-1
. The wavelength of this light will be
Choose an answer
500 nm
500 m
200 nm
5 x 10
7
m
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Question # 5
Some of the elements of a period show similar behavior with the elements of next group in next period this is called
Choose an answer
Vertical relationship
Oblique relationship
Diagonal relationship
None
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Question # 6
Purine derivative among the following bases is
Choose an answer
Thymine
Uracil
Guanine
Cytosine
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Question # 7
The sum of mole percent of all the components of solution is always equal to :
Choose an answer
Less than 100
One
100
10
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Question # 8
What will be the molarity of solution if 103 g (NH
4
)
2
SO
4
is dissolved per 600 cm
3
of water
Choose an answer
2.32 M
3.32 M
4.32 M
1.30 M
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Question # 9
Which of the following expressions show a heterolytic bond fission
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Question # 10
A fibre which is made from acrylonitrile as monomer
Choose an answer
PVC
Rayon fibre
Acrylic fibre
Polyester fibre
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Question # 11
Choose an answer
Diastase
Lipase
Inverters
Zymase
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Question # 12
The potassium fertilizers are preferred for horticulture, tobacco and potatones, which of the following is popular potassium fertilizer
Choose an answer
Potassium oxide
Potassium chloride
Potassium sulphate
Potassium nitrate
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Question # 13
Silicon atom is hybridized:
Choose an answer
sp
sp
2
sp
3
dsp
2
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Question # 14
Grignard reagent on reaction with a ketone forms
Choose an answer
Tertiary alcohol
Secondary alcohol
Primary alcohol
Carboxylic acid
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Question # 15
Which one is used as a fuel for internal combustion engines in many European countries and Brazil
Choose an answer
C
2
H
5
OH
CH
3
OH
CH
3
COOH
C
2
H
2
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Question # 16
The correct arrangement of increasing order of atomic radius among Na, K, Mg, Rb is
Choose an answer
Mg < K < Na < Rb
Mg < Na < K < Rb
Mg < Na < Rb < K
Na < K < Rb < Mg
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Question # 17
The reaction rate is expressed in the units of
Choose an answer
mol dm
-3
S
-
mol dm
-3
mol dm
-3
N
-
dm
-3
S
-
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Question # 18
Two or more similar monomers combine to form:
Choose an answer
Homopolymer
Copolymer
Ter polymer
Thermoplastic polymers
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Question # 19
Choose an answer
Aqueous bromine
Dilute HNO
3
Dilute HCI
CH
3
COCI
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Question # 20
For a given process the heat change at constant pressure q
p
is related to the heat change at constant volume (q
v
) according to
Choose an answer
q
p
= q
v
q
p
< q
v
q
p
> q
v
q
p
= qv/2
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Question # 21
Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon?
Choose an answer
Aldol condensation
Reimer Tiemann reaction
Cannizaaor's reaction
Wolf-kishner reduction
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Question # 22
Colligative properties are the properties of :
Choose an answer
Dilute solutions which behave as nearly ideal solutions.
Concentrated solutions which behave as nearly non-ideal solutions.
Both(i) and (ii)
Neither (i) nor (ii)
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Question # 23
DDT is formed from
Choose an answer
Benzene and Chlorobenzene
Chloral and Chlorobenzene
Chloral and Benzene
Chlorobenzene and chlorine
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Question # 24
Which compound shows hydrogen bonding
Choose an answer
C
2
H
6
C
2
H
5
CI
CH
3
-O-CH
3
C
2
H
5
OH
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Question # 25
In physical and chemical properties, transition elements show
Choose an answer
Similarities
Dissimilarities
Both of these
Somestimes similarities, sometimes dissimilarities
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Question # 26
Decreases om concentration of reactant is denoted by
Choose an answer
dc/dt
-dc/dt
+dc/dt
None
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Question # 27
Which of the following discoveries resulted in a version of the Mendeleefs
periodic law
Choose an answer
The nucleus of atom by Rutherford
The elements polonium and radium by the Curies
Atomic numbers by Moseley
x-rays by Roentgen
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Question # 28
Choose an answer
32
64
16
4
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Question # 29
Which of the following process is employed to convert alkyl halide into alcohol?
Choose an answer
Addition
Substitution
Dehydrohalogenation
Molecular rearrangement
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Question # 30
The ratio of moles of a particular component of solution to total moles of all components of solution is :
Choose an answer
Mole fraction.
Molality.
Molarity.
Normality.
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Question # 31
Kolb's method is not useful for the production of
Choose an answer
Methane
Ethane
Propane
Butane
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