ICSE Class 10 Haloalkanes and Haloarenes — Mock Test

Free online mock test for Haloalkanes and Haloarenes (ICSE Class 10 Chemistry) — 83 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.Assertion (A): Tertiary alkyl halides undergo SN1 reactions very fast. Reason (R): Tertiary carbocations formed in the slow step are highly stable.
   • A.Both A and R are true and R is the correct explanation of A
   • B.Both A and R are true but R is NOT the correct explanation of A
   • C.A is true but R is false
   • D.A is false but R is true
2. 2.Alkyl halides react with sodium in dry ether to give hydrocarbons with double the number of carbon atoms. This reaction is the:
   • A.Wurtz reaction
   • B.Finkelstein reaction
   • C.Swarts reaction
   • D.Sandmeyer reaction
3. 3.What is the major organic product when (CH3)3CBr is treated with KOH?
   • A.2-Methylpropene (an alkene by elimination)
   • B.2-Methylpropan-2-ol
   • C.2-Methylpropanal
   • D.Propan-2-ol
4. 4.Why does para-dichlorobenzene have a higher melting point than its ortho- and meta-isomers?
   • A.Its higher symmetry allows it to fit better into the crystal lattice
   • B.It has a much higher molecular mass than the other isomers
   • C.It is more polar than the ortho- and meta-isomers
   • D.It has stronger hydrogen bonding than the other isomers
5. 5.A mixture containing two enantiomers in equal proportions is called a racemic mixture. Its net optical rotation is:
   • A.zero
   • B.double that of either enantiomer
   • C.always strongly dextrorotatory
   • D.always strongly laevorotatory