JEE Questions for Chemistry Hydrocarbons Quiz 4 - MCQExams.com

What would be the product formed when 1-bromo-3-chlorocyclobutane reacts with two equivalents of metallic sodium in ether ?

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  • 2)
    Chemistry-Hydrocarbons-4637.png

  • Chemistry-Hydrocarbons-4638.png

  • Chemistry-Hydrocarbons-4639.png
Which one of the following methods is neither meant for the synthesis nor for separation of amines ?
  • Curtius reaction
  • Wurtz reaction
  • Hofmann method
  • Hinsberg method
Iso-propyl bromide on Wurtz reaction gives
  • hexane
  • propane
  • 2,3-dimethyl butane
  • neo-hexane
The chemicals and the reaction conditions required for the preparation of ethane are
  • C2H5I, Zn -Cu, C2 H5 OH
  • CH3Cl, Na, H2O
  • KOOC—CH =CH—COOK electrolysis
  • CH3CO2Na, NaOH, CaO, ∆
Petrol for aviation purpose must contain
  • straight chain hydrocarbons
  • aromatic hydrocarbons
  • olefinic hydrocarbons
  • highly branched chain paraffins
Synthetic petrol is prepared by
  • Wurtz reaction
  • by distillation
  • Fischer-Tropsch process
  • None of the above
Cetane is a compound which has very good ignition property. Chemically it is
  • CH3 (CH2)14 CH3
  • (CH3)3 C(CH2)11 CH3
  • C17 H34
  • None of the above
Petroleum is obtained from water gas, name of the reaction involved is
  • Fischer-Tropsch
  • Bengoic
  • Dow's
  • Kjeldahl' s
Which of the following is correct number of carbon atom present as the constituent of kerosene oil ?
  • C10— C16
  • C4— C6
  • C8— C16
  • C12— C18
Which of the following increases the octane number ?
  • Branching of chain
  • Absence of double and triple bond
  • Non-cyclic alkanes
  • None of the above
Match the chemical conversion in Column I with the appropriate reagents in Column II and select the correct answer using the codes given below the columns.
Chemistry-Hydrocarbons-4646.png
  • P = 2, Q = 3, R = 1, S = 4
  • P = 3, Q = 2, R = 1, S = 4
  • P = 2, Q = 3, R = 4, S = 1
  • P = 3, Q = 2, R = 4, S = 1
A dibromo derivative of an alkane reacts with sodium metal to form an cyclic hydrocarbon. The derivative is
  • 1,1-dibromopropane
  • 2,2-dibromopropane
  • 1,2-dibromoethane
  • 1,4-dibromobutane
Which cycloalkane has the lowest heat of combustion per CH2 group ?
  • Cyclopropane
  • Cyclobutane
  • Cyclopentane
  • Cyclohexane
Suitable reagents A and B for the following reactions are
Chemistry-Hydrocarbons-4649.png
  • Br, Br2
  • Br2 , NBS
  • NBS, NBS
  • NBS, Br2

Chemistry-Hydrocarbons-4651.png
  • 6-oxoheptanal
  • 6-oxoheptanoic acid
  • 6-hydroxyheptanal
  • 3-hydroxypentanal
Cyclohexene on reaction with OsO4 followed by reaction with NaHSO3 gives
  • cis-diol
  • trans-diol
  • epoxy
  • alcohol
Hydrogen bonding plays a central role in the following phenomena
  • ice floats in water
  • higher Lewis basicity of primary amines than tertiary amines in aqueous solutions
  • formic acid is more acidic than acetic acid
  • dimerisation of acetic acid in benzene
For which of the following molecule significant μ ≠ 0?
Chemistry-Hydrocarbons-4655.png
  • Only I
  • I and II
  • Only III
  • III and IV

Chemistry-Hydrocarbons-4657.png

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  • 2)
    Chemistry-Hydrocarbons-4659.png

  • Chemistry-Hydrocarbons-4660.png

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Which reagent would you use to carry out the reaction Ethyl benzene → 2 and 4-chloro 1-ethyl benzene?
  • Cl2 light and heat
  • Cl2 , FeCl3
  • SOCl2
  • C2 H5 Cl, AlCl3
Which pair is usually required for a nucleophilic aromatic substitution reaction?
  • An —NO2 substitution and a strong electrophile.
  • A ring bearing a strong activating group and a strong acid
  • An aryl halide with an NO2 and a strong nucleophile.
  • An unsubstituted benzene ring and a strong electrophilic

Chemistry-Hydrocarbons-4664.png
  • Benzyl chloride
  • Benzal chloride
  • Hexachlorobenzene
  • Benzene hexachloride
Among P, Q,R and S, the aromatic compound (S) is/are
Chemistry-Hydrocarbons-4666.png
  • P
  • Q
  • R
  • S
  • All the above
To get DDT chlorobenzene has to react will following compound in the presence of concentrated sulphuric acid
  • trichloro ethane
  • dichloro acetone
  • dichloro acetaldehyde
  • trichloro acetaldehyde
Three fused benzene rings are found in
  • naphthalene
  • anthracene
  • phenanthroline
  • triphenyl methane
  • None of the above
In the oxidation of C6H5 —CH2 —CH3 by KMnO4 the product formed is
  • C6H5 —CH2 —CHO
  • C6H5 —CH2 —COOH
  • C6H5 —COOH
  • C6H5 —CH2 —OH
Which of the following molecules, in pure form is (are) unstable at room temperature ?

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  • 2)
    Chemistry-Hydrocarbons-4672.png

  • Chemistry-Hydrocarbons-4673.png

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Lindane can be obtained by the reaction of benzene with
  • CH3 Cl / anhydrous AlCl3
  • C2 H3l /anhydrous AlCl3
  • CH3 COCl / anhydrous AlCl2
  • Cl2 in sun light
Which of the following molecules/species are aromatic

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  • 2)
    Chemistry-Hydrocarbons-4678.png

  • Chemistry-Hydrocarbons-4679.png

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Identify C in the following
Chemistry-Hydrocarbons-4682.png
  • ethanol
  • propanone
  • cumene hydroperoxide
  • water
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