(A) -32°C
(B) -80°C
(C) -100°C
(D) -196°C
Q. _______ is a cryogenic fluid that can cause rapid freezing on contact with living tissue.
(A) Liquid Nitrogen
(B) Liquid Air
(C) Liquid Hydrogen
(D) None of these
Q. What is the density of liquid air?
(A) 770 kg/m³
(B) 870 kg/m³
(C) 970 kg/m³
(D) None of these
Answers:
1. (D) -196°C
2. (A) Liquid Nitrogen
3. (B) 870 kg/m³