Question: is first round of hockey best of 5

Answer: No, The Stanley Cup playoffs (French: Les séries éliminatoires de la Coupe Stanley) is an elimination tournament in the National Hockey League consisting of four rounds of best-of-seven series. Eight teams from each of the two conferences qualify for the playoffs based on regular season points totals. The final round is commonly known as the Stanley Cup Finals, which sees the two conference champions play for the Stanley Cup.