The position of double bond in alkenes can be located by :
  • Hydrogenation of oil
  • Ozonolysis
  • Photolysis
  • Hydration
Nitrobenzene on reaction with conc. HNO/HSO
  • 1, 2-Dinitrobenzene
  • 1, 3-Dinitrobenzene
  • 1, 4-Dinitrobenzene
  • 1, 2, 4-Trinitrobenzene
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
  • –C ≡ N
  • -SO
  • -COOH
  • -NO
Which of the following compounds will exhibit geometrical isomerism?
  • 1 – Phenyl – 2 – butene
  • 3 – Phenyl – 1 – butene
  • 2 – Phenyl – 1 butene
  • 1, 1 – Diphenyl – propene .
The order of decreasing reactivity towards an electrophilic reagent, for the following : (i) Benzene (ii) Toluene (iii) Chlorobenzene (iv) Phenol would be:
  • (i) > (ii) > (iii) > (iv)
  • (ii) > (iv) > (i) > (iii)
  • (iv) > (iii) > (ii) > (i)
  • (iv) > (ii) > (i) > (iii)
Pure methane can be prepared by
  • Soda lime decarboxylation
  • Kolbes electrolytic method
  • Wurtz reaction
  • Reduction with H
Hydrocarbon containing following bond is most reactive
  • C ≡ C
  • C = C
  • C-C
  • All of these
The compound CH
  • Bromine water
  • Bayers reagent
  • Fehling solution
  • Ammonical silver nitrate
Isopropyl bromide on Wurtz reaction gives
  • Hexane
  • Propane
  • 2, 3 – Dimethylbutane
  • Neohexane
The angle strain in cyclobutane is
  • 24°44
  • 29°16
  • 19°22
  • 9°44
The first fraction obtained during the fractionation of petroleum is:
  • Gasoline
  • Diesel Oil
  • Hydrocarbon Gases
  • Kerosene Oil
2 – Phenylpropene on acidic hydration gives
  • 2 – Phenyl – 2 – propanol
  • 2 – Phenyl – 1 – propanol
  • 3 – Phenyl – 1 – propanol
  • 1 – Phenyl – 2 – propanol
The coal tar fraction which contains phenol is:
  • Heavy Oil
  • Light Oil
  • Middle Oil
  • Green Oil
Which one of these is not true for benzene?
  • There are three carbon-carbon single bonds and three carbon-carbon double bonds.
  • Heat of hydrogenation of benzene is less than the theoretical value
  • It forms only one type of mono substituted product
  • The bond angle between carbon-carbon bonds is 120 Degree
The catalyst used in Friedel – Crafts reaction is
  • Aluminium Chloride
  • Anhydrous Aluminium Chloride
  • Ferric Chloride
  • Copper .
Alkyl halides react with dialkyl copper reagents to give?
  • Alkanes
  • Alkenes
  • Hydrogen
  • Carbon
The lowest alkene, that is capable of exhibiting geometrical isomerism is
  • Ethene
  • But – 1- ene
  • But – 2 – ene
  • Propene.
Presence of a nitro group in a benzene ring
  • Activates the ring towards electrophilic substitution
  • Renders the ring basic
  • Deactivates the ring towards nucleophilic substitution
  • Deactivates the ring towards electrophilic substitution
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