Related InterviewSolutions

• Ethane is subjected to combustion process. During the combustion the hybrid state of carbon changes from:A. `sp^(2)` to `sp^(3)`B. `sp^(3)` to `sp`C. `sp` to `sp^(3)`D. `sp^(2)` to `sp^(2)`
• Arrange the following alkanes in decreasing order of their heats of combustion. (i) `CH_(3)-overset(CH_(3))overset(|)underset(("Neo-pentane")(i))underset(CH_(3))underset(|)(C)-CH_(3)` (ii) `CH_(3)-underset((Iso-pentane)(ii))underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3)` (iii) `CH_(3)-CH_(2)-underset(("n-pentane"))(CH_(2)-CH_(2)-CH_(3)`A. `(i) gt (ii) gt (iii)`B. `(iii) gt (i) gt (ii)`C. `(iii) gt (ii) gt (i)`D. `(i) gt (iii) gt (ii)`
• Arrange the compounds I,II and III decreasing order of their heats of combustion:A. `II gt I gt III`B. `I gt II gt III`C. `III gt II gt I`D. `IIIgt I gt II`
• `CH_(2)-CH_(2)-CH_(2)-CH_(3)overset(Br_(2)//hv)(to)` Major product in the above reaction is:A. Racemic mixtureB. MesoC. DiastereomersD. Constitutinal isomers
• A hydrocarbon A (V.D. = 36) forms only one monochloro substitution product. A will be:A. Iso-pantaneB. neo-butaneC. cyclopentaneD. methyl-cyclohexane
• Halogenation is a substitution reaction, where halogen replaces one or more hydrogens of hydrocarbon Chlorine free radical make `1^(@), 2^(@), 3^(@)` radicals with almost equal ease, whereas bromine free radicals have a clear preference for the formation of tertiary free radicals. So, bromine is less reactive, and more selectrive whereas chlorine is less selective and more reactive. The relative rate of abstraction of hydrogen by `Br^(**)` is `underset(1600)(3^(@)) gt underset(82)(2^(@)) gt underset(1)(1^(@))` `underset(5)(3^(@)) gt underset(3.8)(2^(@)) gt underset(1)(1^(@))` `CH_(3)-overset(CH_(3))overset(|)(CH)-CH_(3)overset(Cl_(2)//hv)(to)` product Major product in the above reactio is:A. `CH_(3)-overset(CH_(3))overset(|)(CH)-CH_(2)-Cl`B. `CH_(3)-overset(CH_(3))overset(|)underset(Cl)underset(|)(CH)-CH_(3)`C. `CH_(3)-CH_(2)-CH_(2)-Cl`D. `CH_(3)-underset(Cl)underset(|)(CH)-CH_(2)-CH_(3)`
• Among the following free radical bromination reactions, select those in which `2^(@)` halide is the major product- A. P, Q, R, SB. P, R, UC. P, R, S, TD. P, Q, R, S, T
• Which of the followiing compounds can be best prepared by Wurtz-reaction?A. Iso-butaneB. n-butaneC. n-pentaneD. Iso-pentane
• The correct order of reactivity of I, II & III towards addition reactions is:A. I gt III gt IIB. I gt II gt IIIC. III gt II gt ID. III gt I gt II
• Among the structures given, select the enantiomers:A. I and IIB. I and IIIC. II and IIID. I, II and III