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
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
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
Acetylene can be converted into methyl vinyl ether on reaction with
1.Vinyl alcohol
2.Methyl alcohol
3.Dimethyl ether
4.Methanal.
Alcohholic solution of caustic potash is a specific reagent for
1.Dehydration
2.Dehydrohalogenation
3.Dehydrogenation
4.Hydration.
Alcoholic solution of caustic potash is a specific reagent for
1.dehydro-halogenation
2.dehydrogenation
3.dehydration
4.hydration
Alkenes are isomeric with
1.cycloalkenes
2.cycloalkanes
3.alkanes
4.alkenes
Alkyl halides gives alkenes when treated with
1.alc KOH
2.aq KOH
3.molten KOH
4.All the above
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
Among the alkanes with an increase in mol wt??.
1.m.pt. decreases
2.f.pt. decreases
3.b.pt increases
4.density decreases
An example of conjugate diene is
1.hexadiene 1 5
2.butadiene 1 2
3.butadiene 1 3
4.pentadiene 1 4
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
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
Bromination of isobutene gives as major product
1.n-butyl bromide
2.tert. butyl bromide
3.isobutyl bromide
4.None of the above
Cetane is
1.n-Hexane
2.n-Octane
3.n-Pentadecane
4.n-Hexadecane.
Crude oil is a complex mixture of
1.acids
2.alcohols
3.hydrocarbons
4.esters
Dehydrohalogenation of alkyl dihalides gives
1.alkyl halides
2.alkynes
3.alkenes
4.alkanes
During distillation of coal tar naphthalene is a constituent of
1.Middle oil
2.Green oil
3.Light oil
4.Heavy oil.
Ethylene when treated with bromine water gives
1.ethyledene bromide
2.ethylene bromohydrin
3.ethylene bromide
4.methanol
In ethane each carbon atom is bonded to
1.4 atoms
2.2atoms
3.3 atoms
4.5 atoms
In which of the following C-H bond will be smallest?
1.Ethylene
2.Acetylene
3.Methane
4.Ethane
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
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
Octane number of iso-octane is
1.Zero
2.100
3.80
4.20
Olafins means
1.ethene
2.unsaturated
3.oil forming
4.having tripple bond
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
Polythene is a polymer of
1.ethylene
2.propylene
3.isobutene
4.vinyl chloride
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
Sodium propionate on decarboxylation with soda-lime gives
1.Propane
2.Ethane
3.Butane
4.Pentane.
Sodium propionate on decarboxylation with soda-lime gives
1.Propane
2.Ethane
3.Butane
4.Pentane.
Tetraethyl lead is used as
1.petroleum additive
2.ethylating agent
3.antrepeller
4.catalyst
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
The formation of PVC from vinyl chloride is an example of
1.condensation polymerisation
2.addition polymerisation
3.substitution reaction
4.None of these
The higher fraction of crude oil burn with pinkish flame
1.smokiest flame
2.pinkish flame
3.blue flame
4.red flame
The least substituted alkene is the major product in accordance with
1.Vant Hoff rule
2.Wurtz reaction
3.Markounikoffs rule
4.Hoffmanns rule
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
The number of isomeric pentanes is
1.4
2.3
3.2
4.1
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
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.
Vapours of ethyl alcohol when passed over phosphoric acid at 220 degreeCentigrade gives
1. diethyl phosphate
2.methylene
3.ethyl hydrogen phosphate
4.ethylene
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
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
Which of the following alkanes will undergo oxidation readily?
1.ethane
2.iso-butane
3.iso-pentane
4.2 methyl propane
Which of the following can form metallic derivatives by the replacement of hydrogen atoms? Ethylene
1.Ethylene
2.Acetylene
3.Ethane
4.Methane
Which of the following has dipole moment?
1.trans-2-butene
2.1-propene
3.cis-2-butene
4.Both A and B
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
Which of the following have maximum boiling point?
1.n-pentane
2.isopentane
3.isohexane
4.n-hexane
Which of the following will show maximum possible isomers?
1.Pentene
2.Pentane
3.Butane
4.Butene
With the increase in branching the boiling point
1.decreases
2.increases
3.no regular gradation
4.remains constant
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