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PPSC Chemistry Part II Organic Chemistry Online Test MCQs With Answers
Question # 1
Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives.
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o - creaol
p - creaol
2,4 -dihydroxy toluene
Benzoic acid
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Question # 2
The reaction of toluene with chlorine in the presence of light gives.
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Benzoyl chloride
Benzyl chloride
m-chlorotoluene
Mixture of 0 and p -chlorotoluene
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Question # 3
Vitamin which contains cobalt is.
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Vitamin B1
Vitamin B2
Vitamin B6
Vitamin B12
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Question # 4
Combination of a -amino acid through which linkages results result in formation of protein
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Ester linkage
Glycosidic linkage
Lactum linkage
Peptide linkage
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Question # 5
a-terpioneol is obtained on hydration of which of the following with dilute H2SO4.
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Citral
Myrcene
Linalool
Limonene
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Question # 6
Vitamin D1 is chemically known as
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Ergocalciferol
Tocopherol
Aserphthol
Phylloquinone
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Question # 7
The IUPAC name of HOCCH2CH2CH2COOH is
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4- formylbutanoic acid
5- formylpentanoic acid
4- carboxybutanal
5- carboxypentanal
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Question # 8
The dye obtained from madder root
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Indogotin
Indanthrene
Alizarin
Acriflavin
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Question # 9
The base which in not present in DNA is
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Adenine
Guanine
Thymine
Cytosine
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Question # 10
For a compound to act as a dye it must have
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A suitable colour
Ability to fix to fibre
Both A and B
None of these
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Question # 11
All steroids on heating wish solenium give
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phenanthrene
Cholesterol
Diels hydrocarbon
Isoprene
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Question # 12
Sanger's reagent is
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Carbobenzyloxy chlride
Dimethyl amino sulphonyl chloride
I-Fluoro -2,4-dinitrobnzene
2,4- Dinitrophenyl hydrazine
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Question # 13
In which polymer the strength of inter molecular forces is maximum
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Elastomers
Thermoplastic
Fibre
Cross linked polymer
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Question # 14
The equation which relates the reaction rates and equilibrium constants of many reactions is known as.
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Taft equation
Hammett equation
Differential equation
Linear equation
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Question # 15
a- pinene hydrochloride on warming rdarranges to form bornyl chloride.The rearrangement is known as.
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Pinacol pinacolone
Hofinann
Wager Mecrwein
Wolff
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Question # 16
Which of the following statements are correct for Linear polymers.
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Linear polymers may be condensation as well as addition polymers
Structure is well packed in nature
Linear polymers have higher density higher melting point and higher tensile strength
All are correct
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Question # 17
The addition of HCl in the presence of poroxule does not follow anti Markovnikov's rule because.
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HCl bond is too strong to be broken homolytically
Cl atom is not reative enough to add on to a double bond
Cl combines with H to give back HCl
HCl is a reducing agent.
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Question # 18
Arrangement of peptide chains of protein in spec to form helix stucture is referred to as.
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Primary structure
Secondary structure
Tertiary structure
Quaternary structure
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Question # 19
When FeSO4 is added in the sodium extract the compound formed is.
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Only Na4[Fe (CN)6]
Only Fe (OH)2
Only Na2So4
Mixture of all these
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Question # 20
Which of the following is most acidic.
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Phenol
p-nitrophenol
o-Nitrophenol
m-Nitrophenol
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Question # 21
Beillstein test is used for.
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Cl
N2
CO2
Na
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