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PPSC Chemistry Part II Organic Chemistry Online Test MCQs With Answers
Question # 1
Which of the following statement is not correct with respect to limitations of Hammett equation.
Choose an answer
It is only applicable to aromatic systems
Only applicable to aliphatic systems
It is not valid for m-substituent
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Question # 2
Organic substance responsible for the smell of the Flowers etc are grouped together in chemistry as.
Choose an answer
Perfumes
Terphenoids
Flavonoids
Alkaloids
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Question # 3
Which of the following case of acid or base strength is not explained by inductive effect.
Choose an answer
Formic acid> acetic acid
Dimethyl amine > trimethyl amine
Dimethyl amine > methyl amine
Chloroacetic acid > acetic acid
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Question # 4
a-terpioneol is obtained on hydration of which of the following with dilute H2SO4.
Choose an answer
Citral
Myrcene
Linalool
Limonene
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Question # 5
Monomers are Teflon is
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Monochloroethene
1,2- Difluoroethene
1,1,2- Trifluoroethene
Tetrafluoroethene
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Question # 6
Enzymatic action is heat at a fixed
Choose an answer
Temparature
pH
Both of these
None of these
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Question # 7
The molar mass of an organic acids is determined by
Choose an answer
Depression of freezing point
Elevation of boiling point
Volumetric method
Victor Myer's method
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Question # 8
Oil of turpentine contains.
Choose an answer
a-pinene
p- pinene
Both A and B
None of these
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Question # 9
The vitamin which is related to monossaccharides is.
Choose an answer
Vitamin A
Vitamin C
Vitamin D
Vitamin E
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Question # 10
Hydrolysis of nucleoprotein result in the formation of.
Choose an answer
Proteins
Nucleic acids
Both A and B
They do not hydrolyse
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Question # 11
Citral when heated with KHSO4 forms.
Choose an answer
Isoprene
p-cymene
p-menthane
Dipentene
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Question # 12
Rectified spirit obtained by formentation contains 5% of water .So in order to remove it, rectified spirit is mixed with suitable quantity of benzene and heated Benzene helps because.
Choose an answer
It is dehydreating agent and so removes water
It forms the loweer layer which retains all the water so that alcohol can be distilled off
It form an azeotropic mixture having high boiling point and thus allows the alcohol to distall over
It forms low boiling azeotropic mixture which distille over leaving behind pure alcohol which can than be distilled.
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Question # 13
Oil of turpentine contains
Choose an answer
a-pinene
b- pinene
Both A and B
Name of these
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Question # 14
A terpenoid which has as alcoholic group in the molecule is.
Choose an answer
Citral
Camphor
Menthol
Carvone
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Question # 15
Vet days are generally applied to the fabric in the form of.
Choose an answer
Mordants
Leuco base
Oxidised base
Dispersed dyes.
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Question # 16
Which of the following techniques is involved in purification of organic compound.
Choose an answer
Distillation
Sublimation
Solvent extraction
All above
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Question # 17
Ziegler -Natta catalysta is
Choose an answer
(C2H3)3 Al
TiCl4
(C2H5)3 Al/TiCl4
(C2H3)3 B/TiCl2
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Question # 18
Soft drinks and baby feeding bottles are generally made up
Choose an answer
Polyeater
Polyurethens
Polyamide
Polyetyrene
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Question # 19
The IUPAC name of ethylene oxide is.
Choose an answer
Epoxy methane
Oxcethene
Methoxymethane
All of the above
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Question # 20
IUPAC name of HCONH2 is.
Choose an answer
Methanamide
Methanoylamine
Ammoethanal
Formanide
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Question # 21
Phosphorus is detected by fusing the organic compound with -------followed by extraction with H2O
Choose an answer
HNO3
H2SO4
Sodium per oxide
Ozone
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