IIT JEE Chemistry Final Revision Set 25

1. The electrophilic addition of 1,3-butadiene produces
(a) 1,2-addition product only
(b) 1,4-addition product
(c) both 1,2- and 1,4- addition products which are not at equilibrium with each other
(d) both 1,2- and 1,4-addition products which are at equilibrium with each other


2. An alkene on treating with hot acidified KMnO4 gives 4-oxopentanoic acid. The alkene is
(a) pentene (b) 2-pentene
(c) 1-methylcyclobutene (d) 1,2-dimethylcyclopropene


3. An alkene on treating with hot acidified KMnO4 gives succinic acid. The alkene is:
(a) 1-butene (b) 2-butene (c) 2-methylbutene (d) cyclobutene


4. Statement : The freezing point of 0.05 M urea solution is different from that of 0.05 M sodium chloride solution.

Reason : The depression in freezing point is directly proportional to the number of species present in the solution.

State whether the statement is true or not and whether reason explains the statement or not.

5. Statement : If one component obeyed Raoult’s law over a certain range of composition, the other component would not obey Henry’s law in that range.

Reason : Raoult’s law is a special case of Henry’s law.

State whether the statement is true or not and whether reason explains the statement or not.