JEE Questions for Chemistry Hydrocarbons Quiz 9 - MCQExams.com

In preparation of alkene from alcohol using Al2O3 which is an effective factor?
  • Porosity of Al2O3
  • Temperature
  • Concentration
  • Surface area of Al2O3
Consider the following statements:
A hydrocarbon of molecular formula C5H10 is a
I. monosubstituted alkene
II. disubstituted alkene
III. trisubstituted alkene
which of the following statements are correct?
  • I, II and III
  • I and II
  • II and III
  • I and III
Select the major product formed from the treatment of 2–bromobutane and alcoholic KOH

  • Chemistry-Hydrocarbons-4834.png
  • 2)
    Chemistry-Hydrocarbons-4835.png

  • Chemistry-Hydrocarbons-4836.png

  • Chemistry-Hydrocarbons-4837.png
Chloroethane reacts with N : a in Presence of dry ether. The Product is
  • Ethane
  • Propane
  • Butane
  • Ethene
Which represents an alkyne ?
  • C5H10
  • C5H12
  • C3H8
  • C4H6
If Sodium Propionate is heated with sodium Propionate then what will be the product ?
  • Ethane
  • Propane
  • Propionic acid
  • Propene
Electrolysis of aqueous solution of sodalime then what will be the product ?
  • Methane
  • Ethane
  • Propane
  • Butane
The preparation of ethane by electrolysis of aqueous solution of sodium acetate is known as ?
  • Grignard reaction
  • Wurtz reaction
  • Kolbe`s synthesis
  • Frankland reaction
Which one of the following has the lowest boiling point
  • n-butane
  • 2-methyl butane
  • 2-methyl propane
  • n- pentane
Which of the following reactions will not give propane

  • Chemistry-Hydrocarbons-4842.png
  • 2)
    Chemistry-Hydrocarbons-4843.png

  • Chemistry-Hydrocarbons-4844.png

  • Chemistry-Hydrocarbons-4845.png
Halogenation of alkane is an example of ?
  • Electrophilic Substitution
  • Nucleophilic substitution
  • Free redical substitution
  • Addition reaction
When ethyl iodide and propyliodide react with Sodium in presence of ether they form ?
  • Only One alkane
  • Mix ture of two alkane
  • Mix ture of three alkane
  • Mix ture of four alkane
CH3CH2OH + CH3MgBr → Product.
Product in above reaction is
  • Methane
  • Ethane
  • Propane
  • Butane
LPG is a mixture of ?
  • CH4 + C2H6
  • C3H8 + C4H10
  • C2H4 + C2H2
  • C6H6 + C6H12
Aqueous solution of the which of following compound on electrolysis gives ethane ?
  • Sodium formate
  • Sodium acetate
  • Ethanoicacid
  • Ethylacetate
As the number of branches in a chain increases the boiling point of alkane.....
  • Increases
  • Decreases
  • Remains same
  • May increases or decreases
Give IUPAC name of (CH3)2 – C – (C2H5)2
  • 2- methy 2-ethylbutane
  • Dimethyl Diethyl methane
  • 3, 3- dimethyl pentane
  • 2, 2- diethyl propane
Which conformational isomer of ethane is more stable ?
  • Skew
  • Staggered(Anti)
  • Partially eclipseds
  • Fully eclipsed
Which Conformational isomer of Cyclohexane is more stable ?
  • Chair
  • Twist boat
  • boat
  • half chair
The number of possible structural isomer of heptane is.
  • 8
  • 9
  • 10
  • 12

Chemistry-Hydrocarbons-4852.png
  • Ethene
  • Ethane
  • Ethyne
  • Methane + Methane

Chemistry-Hydrocarbons-4854.png
  • Elimination
  • Addition
  • Pyrolysis
  • Isomerisation
Which alkane is known as Mars Gas
  • CH4
  • C2H6
  • C3H8
  • C4H10
n- butane on reacting with bromine in presence of sun light given mainly -----
  • CH3 – CH2 – CH2Br
  • CH3CH2CH Br CH3

  • Chemistry-Hydrocarbons-4855.png

  • Chemistry-Hydrocarbons-4856.png
Which one of the following contain iso-propyl group ?
  • 2,2,3,3-tetramethyl pentane
  • 2- methyl pentane
  • 2,2,3-trimethyl pentane
  • 3,3-dimethyl pentane
How many Chiral Compounds are possible on monochlorination of 2–methyl butane
  • 2
  • 4
  • 6
  • 8
How many moles ofO2 are required for complete combustion of one mole of propane
  • 3
  • 10
  • 5
  • 6

Chemistry-Hydrocarbons-4860.png
  • CH3CH Cl CH3
  • CH3 CH = CH2
  • CH3 CH2 CH3
  • CH3 CH(OC2 H5)CH3
Methyl chloride react with Lithium diethyl Copper to give
  • Ethane
  • Propane
  • Butane
  • Propene
Which of the following alkyd bromides may be used for the synthesis of 2,3-dimethyl butane by Wurtz reaction ?
  • n- propyl bromide
  • iso-propyl bromide
  • n-butyl bromide
  • iso-butyl bromide
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