Question

8. Select ONE correct answer
Which of the following statements is the correct combination ?
(a) Grease is used to reduce friction in a bicycle chain
(b) Ball bearings are used to reduce friction in a fan
(c) Oil can be used to increase friction in a car engine
(d) Talc can be used to reduce friction when an object is sliding on a surface.

(A) a, b,d
(B) a,c.d
(C) b.c,d
(D) a, b,c​

Answer 1

Answer:

A

Explanation:

hope it helps.............

Answer 2

Answer:

(B) a,c,d ...................