IIT-JEE-Chemistry-Final Revision sset No.41

Multiple correct choices are possible

1.The following is(are) endothermic reaction(s) :
(a) Combustion of methane
(b) Decomposition of water
(c) Dehydrogenation of ethane of ethylene
(d) Conversion of graphite to diamond.




2. Toluene, when treated with Br2/Fe, gives p-bromotoulene as the major product because the CH3 group :
(A) is para directing
(B) is meta directing
(C) actives the ring by hyperconjugation
(D) deactivates the ring

3. The following statement(s) is(are) correct :
(A) A plot of log Kp versus 1/T is linear
(B) A plot of log [X] versus time is linear for a first order reaction, X --> P
(C) A plot of log p versus 1/T is linear at constant volume
(D) A plot of p versus 1/V is linear at constant temperature

4. The following is(are) endothermic reaction(s) :
(A) Combustion of methane
(B) Decomposition of water
(C) Dehydrogenation of ethane of ethylene
(D) Conversion of graphite to diamond.

5. In the depression of freezing point experiment, it is found that the:
(A) vapour pressure of the solution is less than that of pure solvent
(B) vapour pressure of the solution is more than that of pure solvent
(C) only solute molecules solidify at the freezing point
(D) only solvent molecules solidify at the freezing point


Source
JEE chemistry 1999