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ECAT Chemistry Online Test MCQs With Answers
Question # 1
In a lime kiln, to get higher yield of CO
2
, the measure that can be taken is
Choose an answer
To main high temperature
To pump out CO
2
To remove Cao
To add more CaCO
3
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Question # 2
Which of the following has more unpaired d-electrons?
Choose an answer
Zn
+
Fe
2+
Ni
3+
Cu
+
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Question # 3
Which of the statement is contrary to the first law of thermodynamics
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Energy can neither be created nor destroyed
One form of energy can be transferred into an equivalent amount of other kinds of energy
In an adiabatic process the work done is independent of its path
Continuous production of mechanical work without supplying an equivalent amount of heat is possible
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Question # 4
Which statement is incorrect about standard hydrogen electrode
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Its oxidation and reduction potential is zero
It consists of Pt wire dipped on 1 molar HCI solution
The electrolyte is 1 molar NaOH solution
H
2
gas is passes in it at 1 atmospheric pressure
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Question # 5
The boiling points of alcohols are higher than the corresponding alkanes, This is because
Choose an answer
Of hydrogen bonding existing between molecules of alcohols
Alkanes are dipolar compounds
Alcohols are sweet in taste
Alcohols are soluble in water
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Question # 6
Alkanes have functional group :
Choose an answer
----X
--OH
----COH
No functional group
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Question # 7
Which substances have
Δ
H =
Δ
E
Choose an answer
Solids
Liquids
Gases
Liquids and solids
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Question # 8
Which of the following substances is used as an antiknock compound?
Choose an answer
Tetraethyl lead
Lead tetrachloride
Lead acetate
Ethyle acetate
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Question # 9
NaH is
Choose an answer
Ionic hydride
Complex hydride
Covalent hydride
Interstitial hydride
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Question # 10
Coinage metals like Au, Pt, Ag and Cu are the least reactive metals and don't liberate H
2
gas when treated with acids because
Choose an answer
These have very high positive values of reduction potentials
These have very high negative values of reduction potentials
Their ionization potentials are lowest
Their reduction potentials are close to SHE
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Question # 11
If heat absorbed in the reaction, the process is said to be
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Exothermic
Isothermal
Adiabatic
Endothermic
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Question # 12
Most metals are conductors of electricity because of the :
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Light weight.
Immobility of the electrons.
Lustrous surfaces
Relatively free movement of their electrons
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Question # 13
Coordination number of Pt in [PtCI(NO
2
) (NH
3
)
4
]
2+
is
Choose an answer
2-
4
1
6
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Question # 14
Which one of the following is not air pollutant gas
Choose an answer
CO
CO
2
NO
SO
2
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Question # 15
Which compound contains - OH in their molecule
Choose an answer
Alcohol
Phenol
Alcohol and phenol
Ether
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Question # 16
The electronic configuration of an atom/ion can be defined by the following
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Aufbau principle
Pauli's exclusion principle
Hund's Rule
All the above
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Question # 17
The functional group isomer of dimethylether is
Choose an answer
Ethyl alcohol
Propyl alcohol
Diethyl ether
Butyl alcohol
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Question # 18
Spraying of DDT produces pollution of
Choose an answer
Air
Air and water
Air and soil
Air, water and soil
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Question # 19
The toxic organic compounds and heavy metals and metalloids results in contamination of
Choose an answer
Surface water
Ground water
Both surface and ground water
Neither surface nor ground waters
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Question # 20
Action of Zn with alkyl halides in the presence of an inert solvent forms higher alkanes. This reaction is known as
Choose an answer
Wurtz reaction
Frankland's reaction
Cannizaro reaction
Kalobe's reaction
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Question # 21
Which halide among the following is used as methylating agent?
Choose an answer
CH
3
l
C
2
H
5
Cl
C
2
H
5
Br
C
6
H
5
Cl
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Question # 22
In a Galvanic cell, the electrons flow from
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A node to cathode through the solution
Cathode to anode through the external circuit
Cathode to anode through the external circuit
Anode to cathode through the external circuit
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Question # 23
How much of NaOH is required to neutralize 1500 cm
3
of 0.1 N HCl?
Choose an answer
60 g
6 g
4 g
40 g
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Question # 24
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
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Question # 25
Choose an answer
Alkyl
Alkyl nitrile
Cyanogens
Amine
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Question # 26
Sulphuric acid reacts with PCl
5
to give
Choose an answer
Thionyl chloride
Sulphur monochloride
Sulphuryl chloride
Sulphur tetrachloride
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Question # 27
Essential
α
-amino acids are those which are necessary in the diet
Which one is an essential
α
-amino acids
Choose an answer
Alanine
Aspartic acid
Glycine
Tryptophan
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Question # 28
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
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Question # 29
The art of electroplating was given by
Choose an answer
Faraday
Edison
Thomas Gradam
Brugan
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Question # 30
Ionic radius, in a period from left to right
Choose an answer
Increases
Decreases
Decreases then increases
Increases and decreases
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Question # 31
Reaction of ethanes with KMnO
4
gives:
Choose an answer
Ozonide
Glyoxal
Glycol
Oxalic acid
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