Engineering Chemistry Questions and Answers – Electrophillic Substitution Reaction – 2

This set of Engineering Chemistry Interview Questions and Answers for Experienced people focuses on “Electrophillic Substitution Reaction – 2”.

1. An activating substituent group activates ___________
a) Ortho position
b) Para position
c) Both ortho and para positions
d) Meta position
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2. A deactivating substituent group directs ___________
a) Ortho position
b) Para position
c) Both ortho and para positions
d) Meta position
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3. Which of the following is ortho-para directing group?
a) –NHCOCH₃
b) –NO₂
c) –CN
d) –CHO
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4. Which of the following is a meta directing group?
a) –NHCOCH₃
b) –COOH
c) –OH
d) –OCH₃
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5. The most stable carbonium ion is ___________
a) Methyl carbonium ion
b) 2⁰ carbonium ion
c) 1⁰ carbonium ion
d) 3⁰ carbonium ion
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6. Which of the following has the highest activation of the benzene ring?
a) – NHCOCH₃
b) –OH
c) –NH₂
d) –C₆H₅
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7. HBr reacts fastest with ___________
a) 2-methylpropan-2-ol
b) Propan-1-ol
c) Propan-2-ol
d) 2-methylpropan-1-ol
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8. The compound that can be most readily sulphonated is ___________
a) Benzene
b) Nitrobenzene
c) Toluene
d) Chlorobenzene
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9. In Cannizaro reaction, two molecules of aldehydes are reacted to produce ___________
a) Alcohol only
b) Carboxylic acid only
c) Alcohol and carboxylic acid
d) Alcohol, carboxylic acid and ketone
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