Science or hobby of studying the history of coins is _____?

a) Minting

b) Coinology

c) Coinage

d) Numismatics (more…)

Equinox is a unique phenomenon which means:

a) A day is shortest in a year

b) Where day and night are equal in a year

c) A day is longest in a year

d) None of these (more…)

Which one of the following vitamins will help in blood clotting?

a) Vitamin K

b) Vitamin D

c) Vitamin C

d) None of these (more…)