Question

1.Lubricants are used to
○ Increase friction
○Decrease friction
○Increase or decrease friction
○ None of these
2. The shape of fish is streamlined to
○Change change direction
○increase fluid friction
○decrease fluid friction
○None of these
NO SPAM⚠️ITS VERY URGENT
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Answer 1

Explanation:

1.Lubricant is a substance which is used to control (more often to reduce) friction and wear of the surfaces in a contact of the bodies in relative motion [1]. Depending on its nature, lubricants are also used to eliminate heat and wear debris, supply additives into the contact, transmit power, protect, seal

2.The streamlined body shape (boat shape) allows the fish to move easily in water.

Answer 2

Answer:

lubricants are used to control friction

2 answer = (iii)