Which of the following alkyl bromides may be used for the synthesis of 2,3-dimethylbutane by Wurtz reaction?

Which of the following alkyl bromides may be used for the synthesis of 2,3-dimethyl butane by Wurtz reacction?

Which of the following alkyl bromides may be used for the synthesis of 2,3 -dimethylbutane by the Wurtz reaction?

Which of the following alkane cannot be prepared by Wurtz synthesis?

Which of the following alkyl halides is iso-butyl bromide ?

Which of the following alkyl halides is iso -butyl bromide ?

Which of the following alkyl halides is iso -butyl bromide ?

Which of the following alkyl halides is iso- butyl bromide ?

Which metal is used in Wurtz reaction