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ECAT Chemistry Online Test MCQs With Answers
Question # 1
AgCl is soluble is
Choose an answer
Aqua regia
H
2
SO
4
HCl
NH
3
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Question # 2
Baking powder has which one of the following formula
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Na
2
CO
3
Na
2
SO
4
NaHCO
3
K
2
CO
3
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Question # 3
In passage of electricity through aqueous solution of AgNO
3
silver dissolves at anode to form Ag
+
, the electrodes are
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Silver metal
Pt metal
Graphite
Copper metal
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Question # 4
Protein are classified into
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Simple protein
Complex protein
Derived proteins
All of these
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Question # 5
Hydrogen chloride molecule contains
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Covalent bond
Double bond
Co-ordinate bond
Electrovalent bond
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Question # 6
Identify the heterocyclic compound
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Toluene
Pyridine
Butanoic acid
Propenol
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Question # 7
Statement enthalpy of combustion of H
2
is -285.8 KJ mole
-1
then which is the standard enthalpy of formation of water
Choose an answer
+285.8 KH mole
-1
-285.5 KJ mole
-1
Zero
-218 KJ mole
-1
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Question # 8
Which among the following elements have lowest value of IE
1
?
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Pb
Sn
Si
C
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Question # 9
If Grignard reagent is allowed to react with another alkyl halide the main product is
Choose an answer
An alkane
Cyclo alkane
Alkyne
An alkene
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Question # 10
E.D.T.A is
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Mono-dentate
Bi-dentate
Polydentate
Having three lone pairs of electrons
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Question # 11
The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is
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Hypophosphorus acid
Orthophosphorus acid
Pyrophosphorus acid
Metaphosphorus acid
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Question # 12
The tip of the funnel should touch the side of the beaker in order to avoid
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Splashing
Leakage
Mixing
Contamination
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Question # 13
Which of the following is most electronegative?
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Carbon
Silicon
Lead
Tin
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Question # 14
If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required
Choose an answer
0.5
1.0
1.5
2.0
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Question # 15
Choose an answer
Adding H
2
O and H
+
ions
Adding OH
-
ions
Adding O
2
molecules
Adding O atoms
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Question # 16
Heat absorbed by a system when its volume does not change is equal to
Choose an answer
Internal energy of system
Enthalpy of system
Increase in internal energy of system
Increase in enthalpy of system
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Question # 17
The saturated hydrocarbons usually end with suffix ______
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Ane
Ene
Yne
Oic
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Question # 18
Formic acid is obtained when
Choose an answer
Calcium acetate is heated with conc.H
2
SO
4
Calcium formate is heated with calcium acetate
Glycerol is heated with oxalic acid
Acetaldehyde is oxidized with K
2
Cr
2
O
7
and H
2
SO
4
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Question # 19
The ionic product of H
+
ions and OH
-
in water is called ionization constant of water Kw. The value of Kw at 25°C is
Choose an answer
0.11 x 10
-14
0.30 x 10
-14
1.0 x 10
-14
3 x 10
-14
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Question # 20
Which has the largest radius?
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CO
3+
Mn
3+
Fe
3+
Cr
3+
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Question # 21
Amino acids contain functional groups in it:
Choose an answer
--CO--
--OH
---NH
2
All of these
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Question # 22
Which one of the following is a product of the reaction between C
6
H
5
CH
2
OH and CH
3
COCI
Choose an answer
C
6
H
5
OCOCH
3
C
6
H
5
CH
2
CI
C
6
H
5
CH
2
OCOCH
3
C
6
H
5
CH
2
COCI
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Question # 23
The human body can synthesize ______ amino acids
Choose an answer
1
10
20
19
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Question # 24
In cold countries ethylene glycol is added to water in radiators of cars during winter. It results in
Choose an answer
Lowering in b.pt
Reducing viscosity
Reducing specific heat
Lowering in freezing pt
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Question # 25
A pollutant affects
Choose an answer
Human health
Quality of life
Functioning of ecosystem
All of these
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Question # 26
What is the packet of energy called?
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Electron
Photon
Positron
Proton
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Question # 27
During redox reaction an oxidizing agent
Choose an answer
Gains electrons
Is oxidized
Loses electrons
Hydrolysed
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Question # 28
Saturated solution of NaCl on heating becomes
Choose an answer
Super saturated
Unsaturated
Remains saturated
None
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Question # 29
In the presence of Aluminium ethoxide, aldehydes get converted into esters. The reaction is known as
Choose an answer
Schmidt reaction
Aldol condensation
Beckmann's rearrangement reaction
Tischenko reaction
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Question # 30
Which one of the following has continuous solubility curve
Choose an answer
NH
4
NO
3
CaCI
CaCI
2
. 6H
2
O
Na
2
SO
4
. 10H
2
O
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Question # 31
Sintered glass is porous material used for:
Choose an answer
Absorption
Decoration
Filtration
All of above
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