Alkyl Halides MCQs for MDCAT Practice

Chemistry section, Alkyl Halides chapter. Sample questions from past PMC papers.

1. Question 1
   Which reagent is involved in preparing 2-methylpropanenitrile from 2-iodopropane?
   • A.NH3
   • B.KCN
   • C.CH3CH2NH2
   • D.(CH3CH2)3N
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2. Question 2
   Which of the following compounds could be prepared by reacting bromoethane with potassium cyanide and then reducing the product?
   • A.CH3CH3
   • B.CH3CH2NH2
   • C.CH3CH2CH3
   • D.CH3CH2CH2NH2
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3. Question 3
   In alkyl hydrolysis of a territary halide by aqueous alkail if concentration of alkail is doubled then the reaction rate
   • A.The reaction rate will be doubled.
   • B.The reaction rate will be halved.
   • C.The reaction rate will remain constant.
   • D.The effect on the reaction rate cannot be determined.
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4. Question 4
   In which of the following reactions is the inorganic reagent acting as a nucleophile?
   • A.C6H6 + HNO3 → C6H5NO2 + H2O
   • B.CH3CH = CH2 + Br2 → CH3CHBrCH2Br
   • C.CH3CH2NH2 + HCl → CH3CH2NH3Cl
   • D.CH3CH2Br + NaOH → CH3CH2OH + NaBr
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5. Question 5
   The common name of 2-Methyl-2-chloropropane is:
   • A.A) Isobutyl chloride
   • B.C) sec-Butyl chloride
   • C.D) n-Butyl chloride
   • D.B) tert-Butyl chloride
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6. Question 6
   Given are the different types of alkyl halides based on ‘R’ groups.I. RCH2−XII. R2CH−XIII. R3C−XIV. CH3−XThe increasing order of reactivity of these alkyl halides for the SN2 reaction mechanism is
   • A.I → II → III → IV
   • B.III → II → I → IV
   • C.IV → III → II → I
   • D.IV → I → II → III
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7. Question 7
   When n-butyl magnesium iodide is treated with water, the product is:
   • A.n-butane
   • B.Propane
   • C.Iso-butane
   • D.Alcohol
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8. Question 8
   When 2 - bromopropane is heated with concentrated alcoholic potassium hydroxide, the major product is:
   • A.Propene
   • B.Propan-1-ol
   • C.Propan-2-ol
   • D.Potassium Propoxide
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