12-butyne when reduced with palladised charcoal with poisons like quinoline gives
1.1-butene
2.butane
3.trans-2 butene
4.cis 2-butene
Posted Date:-2021-10-01 16:19:26
A mixture of 1-chloropropane and 2-chloropropane is treated with alcoholic KOH. The resulting mixture will have
1.1-propene
2.2-propene
3.1-propanol
4.a mixture of 1-propene and 2-propene
Posted Date:-2021-10-01 16:19:26
A mixture of sodium butanoate and 2-methyl sodium propanoate is heated with sodalime. The resulting compound will be
1.propane and propyne
2.a mixture of propane and 2-methyl propane
3.methane
4.propane
Posted Date:-2021-10-01 16:19:26
Acetylene can be converted into methyl vinyl ether on reaction with
1.Vinyl alcohol
2.Methyl alcohol
3.Dimethyl ether
4.Methanal.
Posted Date:-2021-10-01 16:19:26
Alcohholic solution of caustic potash is a specific reagent for
1.Dehydration
2.Dehydrohalogenation
3.Dehydrogenation
4.Hydration.
Posted Date:-2021-10-01 16:19:26
Alcoholic solution of caustic potash is a specific reagent for
1.dehydro-halogenation
2.dehydrogenation
3.dehydration
4.hydration
Posted Date:-2021-10-01 16:19:26
Alkenes are isomeric with
1.cycloalkenes
2.cycloalkanes
3.alkanes
4.alkenes
Posted Date:-2021-10-01 16:19:26
Alkyl halides gives alkenes when treated with
1.alc KOH
2.aq KOH
3.molten KOH
4.All the above
Posted Date:-2021-10-01 16:19:26
Alkynes when reduced with sodium in liquid ammonia gives
1.1-alkene only
2.a mixture of cis and trans
3.alkenes
4.None of them
Posted Date:-2021-10-01 16:19:26
Among the alkanes with an increase in mol wt??.
1.m.pt. decreases
2.f.pt. decreases
3.b.pt increases
4.density decreases
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An example of conjugate diene is
1.hexadiene 1 5
2.butadiene 1 2
3.butadiene 1 3
4.pentadiene 1 4
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Aromatisation is the conversion of
1.higher hydrocarbon to lower ones
2.mixing of aromatic hydrocarbon
3.a hydrocarbon to benzene
4.None of above
Posted Date:-2021-10-01 16:19:26
Aromatisation is the conversion of
1.higher hydrocarbon to lower ones
2.mixing of aromatic hydrocarbon
3.a hydrocarbon to benzene
4.None of above
Posted Date:-2021-10-01 16:19:26
Bromination of isobutene gives as major product
1.n-butyl bromide
2.tert. butyl bromide
3.isobutyl bromide
4.None of the above
Posted Date:-2021-10-01 16:19:26
Cetane is
1.n-Hexane
2.n-Octane
3.n-Pentadecane
4.n-Hexadecane.
Posted Date:-2021-10-01 16:19:26
Crude oil is a complex mixture of
1.acids
2.alcohols
3.hydrocarbons
4.esters
Posted Date:-2021-10-01 16:19:26
Dehydrohalogenation of alkyl dihalides gives
1.alkyl halides
2.alkynes
3.alkenes
4.alkanes
Posted Date:-2021-10-01 16:19:26
During distillation of coal tar naphthalene is a constituent of
1.Middle oil
2.Green oil
3.Light oil
4.Heavy oil.
Posted Date:-2021-10-01 16:19:26
Ethylene when treated with bromine water gives
1.ethyledene bromide
2.ethylene bromohydrin
3.ethylene bromide
4.methanol
Posted Date:-2021-10-01 16:19:26
In ethane each carbon atom is bonded to
1.4 atoms
2.2atoms
3.3 atoms
4.5 atoms
Posted Date:-2021-10-01 16:19:26
In which of the following C-H bond will be smallest?
1.Ethylene
2.Acetylene
3.Methane
4.Ethane
Posted Date:-2021-10-01 16:19:26
Iodoform can be prepared in the laboratory by the action of iodine on sodium hydroxide in the presence of
1.formaldehyde
2.acetaldehyde
3.acetic acid
4.formic acid
Posted Date:-2021-10-01 16:19:26
isomers of butyl chloride which will undergo dehydrogenation more readily
1.Among the different
2.tert. butyl chloride
3.sec. butyl chloride
4.n-butyl chloride
Posted Date:-2021-10-01 16:19:26
Octane number of iso-octane is
1.Zero
2.100
3.80
4.20
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Olafins means
1.ethene
2.unsaturated
3.oil forming
4.having tripple bond
Posted Date:-2021-10-01 16:19:26
On ozonolysis and subsequent hydrolysis an alkene gave 2 molecules of formaldehyde and hydrogen peroxide. The alkene is
1.ethylene
2.butylene
3.propylene
4.None of these
Posted Date:-2021-10-01 16:19:26
Polythene is a polymer of
1.ethylene
2.propylene
3.isobutene
4.vinyl chloride
Posted Date:-2021-10-01 16:19:26
Propane when treated with conc. Nitric acid at 723 K gives
1.2-nitropropane
2.1-nitropropane
3.a mixture of nitromethane nitroethane 1-
4.a mixture of nitromethane nitroethane 1-nitropropane and 2-nitropropane nitroethane and nitromethane
Posted Date:-2021-10-01 16:19:26
Sodium propionate on decarboxylation with soda-lime gives
1.Propane
2.Ethane
3.Butane
4.Pentane.
Posted Date:-2021-10-01 16:19:26
Sodium propionate on decarboxylation with soda-lime gives
1.Propane
2.Ethane
3.Butane
4.Pentane.
Posted Date:-2021-10-01 16:19:26
Tetraethyl lead is used as
1.petroleum additive
2.ethylating agent
3.antrepeller
4.catalyst
Posted Date:-2021-10-01 16:19:26
The addition reaction of carbon-carbon double bonds are free radical addition None of the above
1.nucleophilic addition
2.free radical addition
3.electrophilic addition
4.None of the above
Posted Date:-2021-10-01 16:19:26
The formation of PVC from vinyl chloride is an example of
1.condensation polymerisation
2.addition polymerisation
3.substitution reaction
4.None of these
Posted Date:-2021-10-01 16:19:26
The higher fraction of crude oil burn with pinkish flame
1.smokiest flame
2.pinkish flame
3.blue flame
4.red flame
Posted Date:-2021-10-01 16:19:26
The least substituted alkene is the major product in accordance with
1.Vant Hoff rule
2.Wurtz reaction
3.Markounikoffs rule
4.Hoffmanns rule
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The minimum temp. at which oil gives sufficient vapours to form an explosive mixture with air is known as
1.optimum temp.
2.kindling temp.
3.flash point
4.last point
Posted Date:-2021-10-01 16:19:26
The number of isomeric pentanes is
1.4
2.3
3.2
4.1
Posted Date:-2021-10-01 16:19:26
The reactivity of a hydrogen in an alkane depends on carbon atoms
1.conditions
2.carbon atoms
3.the alkane in which it is present
4.whether the hydrogen is primary secondary or tertiary
Posted Date:-2021-10-01 16:19:26
To increase the yield of gasoline from a given sample of crude oil the chemist carries out
1.Fractiomal distillatiom
2.Hydrolysis
3.Aromatization
4.Cracking.
Posted Date:-2021-10-01 16:19:26
Vapours of ethyl alcohol when passed over phosphoric acid at 220 degreeCentigrade gives
1. diethyl phosphate
2.methylene
3.ethyl hydrogen phosphate
4.ethylene
Posted Date:-2021-10-01 16:19:26
Vapours of n-hexane when passed over special catalysts under high pressure and temperature given benzene This process is called
1.cyclisation
2.aromatisation
3.isomerisation
4.crystallization
Posted Date:-2021-10-01 16:19:26
When two alkenes may be formed by dehydrohalogenation of an alkyl halide the alkene which is more substituted is the major or preferred product. This generalisation is known as .
1.Markownikoffs rule
2.Anti-Markownikoffs rule
3.Saytzeff rule
4.None of these is correct
Posted Date:-2021-10-01 16:19:26
Which of the following alkanes will undergo oxidation readily?
1.ethane
2.iso-butane
3.iso-pentane
4.2 methyl propane
Posted Date:-2021-10-01 16:19:26
Which of the following can form metallic derivatives by the replacement of hydrogen atoms? Ethylene
1.Ethylene
2.Acetylene
3.Ethane
4.Methane
Posted Date:-2021-10-01 16:19:26
Which of the following has dipole moment?
1.trans-2-butene
2.1-propene
3.cis-2-butene
4.Both A and B
Posted Date:-2021-10-01 16:19:26
Which of the following has minimum boiling point? isopentane both A and B
1.isopentane
2.neopentane
3.n-pentane
4.both A and B
Posted Date:-2021-10-01 16:19:26
Which of the following have maximum boiling point?
1.n-pentane
2.isopentane
3.isohexane
4.n-hexane
Posted Date:-2021-10-01 16:19:26
Which of the following will show maximum possible isomers?
1.Pentene
2.Pentane
3.Butane
4.Butene
Posted Date:-2021-10-01 16:19:26
With the increase in branching the boiling point
1.decreases
2.increases
3.no regular gradation
4.remains constant
Posted Date:-2021-10-01 16:19:26
Wurtz reaction cannot be used for the preparation of
1.alkanes containing odd no. of C-atoms
2.alkanes containing even no. of C-atoms
3.methane
4.both methane and odd no. of C-atoms
Posted Date:-2021-10-01 16:19:26