In some machines, why is using oil as a lubricant not advisable?

Correct option is C

The correct answer is (c) Sometimes oil leaks into the parts of the machine causing undesirable obstruction of working.
· In certain machines, oil leakage can interfere with the functioning of sensitive parts, leading to blockages or damage to components. This can affect the smooth operation of the machine.
Information Booster:
· Oil is commonly used as a lubricant to reduce friction between moving parts, but in some cases, oil may leak into undesirable areas, causing performance issues.
· For some machines, alternative lubricants like grease or dry lubricants might be more suitable to prevent such problems.
Additional Information:
· While oil can make parts dirty, this is not a major concern for its performance.
· Oil generally reduces friction, not increases it.
· Oil typically makes movement smoother by reducing friction, not tougher.