Question

STON 23 Aptude SECTION Attention to Details
Ukm.,0,0.1.5.1,4,7,WWW.Z
casal NOT in the list caters given above
25​

Answer 1

Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. ... Hence it is considered as a necessary evil .