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Instructions:
Q1.
Which of the following are a nucleophile?
1. :CN-
2. :NH3
3. H+
Q2.
Bonds with lower bond enthalpy are _____________ to break.
1. difficult
2. easy
Q3.
For elimination to occur, a halogenoalkane has to be heated to high temperatures under ____________ conditions.
1. alcoholic
2. alkaline
3. acidic
Q4.
Depletion of Ozone is caused by free radicals formed when chloro-fluoro carbons (CFC) absorb ____________ radiation.
1. gamma
2. UV
3. IR
Q5.
Halogenoalkanes contain "polar" bonds because the halogens are more ____________________ than Carbon.
1. electropositive
2. electronegative
Q6.
Depletion of Ozone is an example of _______________ reaction.
1. substitution
2. reduction
3. elimination
Q7.
In an elimination reaction, the nucleophile acts as a ________________ .
1. acid
2. base
3. catalyst
Q8.
Which of the following can be produced by nucleophilic substitution of Halogenoalkanes?
1. Carboxylic Acids
2. Aldehydes
3. Alcohols
4. Amines
Q9.
Bond enthalpy is also known as: (select all applicable)
1. bond dissociation energy
2. latent heat of vaporisation
3. bond energy
Q10.
Halogenoalkanes do not undergo nucleophilic substitution. True or False?
1. False
2. True
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