Question

Slaked lime solution is mixed with tallow oil with constant stirring to produced ______________

(a) solution base greases

(b) cup greases

(c) complex greases

(d) lithium base greases

I have been asked this question at a job interview.

My doubt is from Classification of Lubricants topic in division Lubricants of Applied Chemistry

Answer 1

The correct option is (b) cup greases

To explain I would say: Cup greases are produced by mixing the slaked lime solution with the tallow oil with constant stirring at hot condition. After soap formation is complete petroleum is added to it and mixed. Some amount of water is generally mixed with greases.