Post 179
Question 57 The compound that has the least value for octane number is:
A) 2,2-dimethylhexane
B) n-heptane
C) 2- methylheptane
D) Iso-octane
Answer: n-heptane
Explanation: n-heptane has 0 octane number or you can say 0 octane rating.
Question 58 The current spell of cold wave in the US has been a fall out of the
A) climate and energy
B) political administration
C) polar vortex
D) biodiversity and habitats
Answer: polar vortex
