What product(s) results when two moles of hydrogen chloride react with 4-methyl-2-pentyne?

What is the major product obtained when two moles of ethyl magnesium bromide is treated with methyl benzoate followed by acid hydrolysis?

What will happen when ammonia reacts with hydrogen chloride ?

What product is formed when methyl chloride is treated with KCN?

What happens when : Methyl chloride is treated with KCN.