Question

2. We pour a drop of oil on the hinges of doors to_______
friction.​

Answer 1

Answer:

We pour a drop of oil on the hinges of doors to reduce friction.

Answer 2

Few drops of oil are poured on the hinges of a door, the door moves smoothly by reducing friction. Oil is a lubricant. it helps to reduce friction by being applied over the irregularities of a surface. So, there is no interlocking of irregularities, so, friction reduces, and the door moves smoothly.

So the answer is reduce.