Jesus left us for heaven from this mountain. What is it’s name?

Jesus left for Heaven from the Mount of Olives(Olivet).

Source: Acts 1:12

According to Jesus how much faith is required to move a mountain?

According to Jesus if we have only a grain of mustard seed of faith we could move a mountain.

Source: Matthew 17:20

On what mountain did Elijah fight with the prophets of Baal?

Elijah fought with the prophets of Baal on Mount Carmel.

Source: 1^st Kings 18:19-20

King Saul and his sons died on this mountain. What is the name of the mountain?

King Saul and his sons died the mountain named Gilboa.

Source: 1^st Samuel 31:8

On what mountain was the law given to the Hebrews?

The law for the people of Israel was given to Moses on Mount Sinai.

Source: Exodus 19:20 continued in chapter 20