What would be the product formed when 1-bromo-3-chlorocylobutane reacts with two equivalents of metallic sodium in water ?

Determine the product formed when 3-Bromo-2,2-dimethylbutane reacts with ethanol

1-Bromo-3-chorocyclobutane when treated with two equivalents of Na in the presence of ether results into

When an ethereal solution of 1-bromo-3-chlorocyclobutane is treated with two equivalent of sodium, the compound expected to be formed is-

When but-1-yne reacts with two equivalents of HBr , the major product is