Chemistry!!!MCQ

[loly23]

I don't get it how to obtain 3 different alkenes by the dehydration of an alcohol, i always get only 2 alkenes.
This question has appeared several times..
Help me plz: N05 P1 24

 

[Xenon]

u r in the right track,
one of the alkenes formed shows cis-trans isomerism,
if u examine the alkenes formed after dehydration, u will notice that butan-2-ol is the correct ans.

 

[loly23]

Oh yeah,I forgot cis-trans isomerism!!
Thx, i never thought of that..

And 1 more plz.
for the question in N04 P1 38 why is the ans not D?

 

[beacon_of_light]

Oh yeah,I forgot cis-trans isomerism!!
Thx, i never thought of that..

And 1 more plz.
for the question in N04 P1 38 why is the ans not D?

look the size of halogen increases so does the bond length of the R --- X in B and C. increase in bond length means a decrease in bond energy. in a given time, no of moles of NaX formed wuld be increased