1st Year Chemistry Chapter 17 Test17. Halogenoalkanes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. The compound 2-methyl-2-chloropropane (t-butyl chloride) is a:
   1. Primary alkyl halide
   2. Secondary alkyl halide
   3. Tertiary alkyl halide
   4. Quaternary halide
2. In halogenoalkanes, a hydrogen atom of alkane is replaced by:
   1. Oxygen
   2. Nitrogen
   3. Halogen
   4. Sulphur
3. Which ion forms white precipitate soluble in aqueous ammonia?
   1. Cl⁻
   2. Br⁻
   3. I⁻
   4. F⁻
4. Alkyl halides have higher melting and boiling points than alkanes because of:
   1. Hydrogen bonding
   2. Ionic bonds
   3. Bond polarity of C-X bond
   4. Non-polar nature
5. The type of elimination reaction in which β-hydrogen is involved is called:
   1. α-elimination
   2. β-elimination
   3. γ-elimination
   4. δ-elimination
6. In nucleophilic substitution, the halogen atom of alkyl halide is replaced by:
   1. Proton
   2. Electron
   3. Nucleophile
   4. Catalyst
7. The reaction of alkyl halide with aqueous NaOH gives:
   1. Alcohol
   2. Ether
   3. Aldehyde
   4. Ketone
8. The general formula of alkyl halide is:
   1. R-OH
   2. R-COOH
   3. R-NH₂
   4. R-X
9. In halogenoalkanes (R-X), the carbon atom bonded to halogen is:
   1. sp hybridized
   2. sp² hybridized
   3. sp³ hybridized
   4. Unhybridized
10. The preparation of alkyl halides from alkanes occurs in the presence of:
    1. Concentrated acid
    2. Ultraviolet light or diffused sunlight
    3. High pressure
    4. Cold water