UnScramble this Word: a n i g c h p o?

Questions

Truffles & mushrooms are edible _______?

Two 1.5 volt batteries, when connected in series, produces _ volts?

Two 747's collided here in 1977.?

Two things grew on the little nut tree. A silver nutmeg & what else?

Two under par on a hole of golf is called a(n) ________?