Which of the following reagents will not yield alkene?

Which of the following reagents is required in the synthesis of alkenes by Witting reaction?

Which of the follwing bases will give the best yield a mixture of alkenes on dehydrohalgenation ?

Which of the following alkene is most stable alkene.

Which of the following reacts with Grignard reagent to yield a primary amine ?

Consider the follwing reaction Which of the following bases will give the best yield of alkene (II) as the major product ?

Which of the following yields both alkane and alkene ?

Which of the following yields both alkane and alkene ?