Which one of the following is not a way to reduce friction...? Mcqs

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Which one of the following is not a way to reduce friction...?

(A) Smooth and polishing surfaces
(B) Less contact area

(C) Oil and lubricants
(D) Ball bearing and rollers

✅ Correct Answer: Increasing the weight

Comments

Source: This question is taken from the Everyday Science

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Which of the following can be used to reduce friction between moving parts of machines...?

(A) Sand
(B) Grease

(C) Gears
(D) Screws

✅ Correct Answer: Grease

Comments

Source: This question is taken from the Everyday Science

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