31) Which is the most abundant element in the human body?
(C) Carbon dioxide
32) Novel H1N1 is often referred to as:
(A) Bord flu
(B) Swine flu
33) Which material has the highest melting point i-e.,3410°C?
34) Light is the fastest thing in the world. At what speed it travels?
(A) 145000 Km per second
(B) 178000 Km per second
(C) 186000 Km per second
(D) 195000 Km per second
35) Which is the oldest known science?
36) Which is the most abundant mineral in human body?