2- Bromopentane is heated with `EtO^(-) Na^(+)` in ethanol. The major product obtained is

product. The major product obtained is

2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is

2-bromopentane is heated with potassium hydroxide in ethanol. The major product obtained is- pent-1-ene 2-ethoxypentane trans-2-pentene cis-2-pentene

2-bromopentane is heated with postassium ethoxide in ethano1 The major product obtained is .

In the reaction The major product obtained is:

2-Chloropentane is heated with potassium ethoxide in ethanol. The major product obtained is