2nd Year Chemistry Chapter 8 Test08. Hydrocarbons

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

1. Which aromatic compound is used as an antiseptic?
   1. Nitrobenzene
   2. Phenol
   3. Styrene
   4. Anisole
2. Benzene is generally resistant to oxidation because of its:
   1. Saturated bonds
   2. Delocalized π-electrons
   3. Presence of hydrogen
   4. Weak σ-bonds
3. The actual heat of hydrogenation of benzene is:
   1. –120 kJ/mol
   2. –208 kJ/mol
   3. –360 kJ/mol
   4. –152 kJ/mol
4. Oxidizing agent commonly used for oxidation of side chain in alkylbenzenes:
   1. HCl
   2. KMnO₄
   3. H₂SO₄
   4. NaCl
5. Kekulé’s dream about benzene structure included:
   1. Chains breaking
   2. Snakes biting their tails
   3. Hexagons glowing
   4. Circles joining hands
6. Nitration of benzene gives:
   1. Nitrobenzene
   2. Benzyl nitrate
   3. Phenol
   4. Toluene
7. Friedel-Crafts alkylation introduces:
   1. NO₂ group
   2. Halogen
   3. Alkyl group
   4. –OH group
8. Catalyst in Friedel-Crafts reaction:
   1. H₂SO₄
   2. AlCl₃
   3. FeX₃
   4. Ni
9. Benzene was first obtained by distilling:
   1. Coal tar
   2. Benzoin resin
   3. Animal fat
   4. Petroleum
10. Substituents that increase reactivity of benzene ring are called:
    1. Activating groups
    2. Deactivating groups
    3. Saturating groups
    4. Oxidizing groups