Question

For, delicate instruments the suitable lubricants are _________

(a) light cutting oil

(b) sunflower oil

(c) heavy cutting oil

(d) thin vegetable oil

This question was posed to me during an online interview.

I'd like to ask this question from Selection of Lubricants topic in chapter Lubricants of Applied Chemistry

Answer 1

Right option is (d) thin vegetable oil

To explain I would say: For delicate instruments, suitable lubricants are very soft ones. They may be like thin vegetable oil, palm oil etc.