Question

The fire point is the lowest temperature at which the vapour of oil burns continuously for at least ________ when a small flame is brought near to it.

(a) 1 Second

(b) 2 Seconds

(c) 4 Seconds

(d) 5 Seconds

The question was asked in an interview for job.

This key question is from Lubricants General Questions in portion Lubricants of Applied Chemistry

Answer 1

The correct choice is (d) 5 Seconds

To elaborate: The fire point is the lowest temperature at which the vapour of oil burns continuously for at least 5seconds when a small flame is brought near to it. The flash point means the at lowest temperature the oil gives enough vapour and flashes out is called flash point.