JEE Questions for Chemistry Hydrocarbons Quiz 1 - MCQExams.com

What is the product formed when acetylene reacts with hypochlorous acid ?
  • CH3COCl
  • ClCH2CHO
  • Cl3CHCHO
  • ClCH2COOH
When sodium propionate is heated with soda lime, the product formed is
  • methane
  • ethane
  • ethene
  • ethyne
Which of the following will yield trans product from butyne ?
  • LiAlH4
  • Na/Liq.NH3
  • NaBH4
  • Ni catalyst
Propene on reaction with hypochlorous acid to give

  • Chemistry-Hydrocarbons-4603.png
  • 2)
    Chemistry-Hydrocarbons-4604.png

  • Chemistry-Hydrocarbons-4605.png

  • Chemistry-Hydrocarbons-4606.png
Propyne on passing through red hot iron tube gives

  • Chemistry-Hydrocarbons-4607.png
  • 2)
    Chemistry-Hydrocarbons-4608.png

  • Chemistry-Hydrocarbons-4609.png
  • None of these
Which one of the following has the minimum boiling point?
  • n-butane
  • 1-butyne
  • 1-butene
  • Iso-butene
The carbide which reacts with water to form ethyne is
  • CaC2
  • SiC
  • Mg2 C3
  • Al4 C3
  • Be2 C
Wurtz reaction involves the reduction of alkyl halide with
  • Zn/HCl
  • HI
  • Zn/Cu couple
  • Na in ether
Thermal decomposition of alkanes in the absence of air is called
  • hydrogenation
  • cracking
  • oxidation
  • combustion
With respect to the conformers of ethane, which of the following statements is true ?
  • Bond angle changes but bond length remains same
  • Both bond angle and bond length change
  • Both bond angles and bond length remains same
  • Bond angle remains same but bond length changes
Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by :
  • Oxidation
  • Cracking
  • Distillation under reduced pressure
  • Hydrolysis
Methyl bromide is converted into ethane by heating it in ether medium with
  • Al
  • Zn
  • Na
  • Cu
The reaction of ethyl magnesium bromide with water would give
  • Ethane
  • Ethyl alcohol
  • Ethyl bromide
  • Ethyl ether
Butene-1 may be converted to butane by reaction with
  • Zn-HCl
  • Sn-HCl
  • Zn-Hg
  • Pd/H2
Pure methane can be produced by
  • Wurtz reaction
  • Kolbe's electrolytic method
  • soda lime decarboxylation
  • reduction with H2
Alkyl halides react with dialkyl copper reagents to give
  • alkenyl halides
  • alkanes
  • alkyl copper halides
  • alkenes
Product formed on electrolysis of potassium salt of fumaric and maleic acid is
  • ethane
  • ethene
  • ethyne
  • methane
Al4 C3 on hydrolysis yields
  • nitrogen gas
  • methane gas
  • hydrogen gas
  • carbon dioxide
What will be the octane number of best fuel?
  • 80
  • 81
  • 74
  • 65
TEL is a compound used as
  • antibiotic
  • antiseptic
  • antiknocking
  • antioxidant
In commercial gasolines the type of hydrocarbons which are more desirable, is
  • branched hydrocarbons
  • straight-chain hydrocarbons
  • aromatic hydrocarbons such as toluene
  • linear unsaturated hydrocarbons
Which of the following fraction of coaltar distillation is obtained at 270°-360°C ?
  • Light oil
  • Middle oil
  • Green oil
  • Heavy oil
LPG mainly contains
  • ethyne
  • butane
  • methane
  • ethane
Tetraethyl lead is a
  • solvent
  • petroleum additive
  • oxidising agent
  • fire extinguisher
In laboratory burners, we use
  • producer gas
  • oil gas
  • gobar gas
  • coal gas
Which of the following is present in natural gas?
  • n-butane
  • Ethane
  • Methane
  • Propane
Cycloalkane has the general formula
  • CnH2n+2
  • CnH2n-2
  • CnH2n
  • C2nH2
  • C2nH2n
Which of the following cycloalkane gives open chain compound, when reacts with bromine?
  • cyclopropane
  • cyclopentane
  • cyclohexane
  • cyclooctane
Action of bromine on cyclopentene gives
  • cyclopentyl bromide
  • 1,2-dibromo cyclopentane
  • cyclopentyl dibromide
  • No reaction
Cycloalkanes are isomeric with
  • alkanes
  • alkenes
  • alkynes
  • arenes
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