Which of the following statements is NOT true?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Nylon thread is weaker than cotton thread.
Option (1) Polymers occur in nature. — Correct. Cellulose, starch and proteins are natural polymers.
Option (2) Nylon is used in the making of parachutes. — Correct. Nylon is strong, light and elastic, so it is used for parachutes and ropes for rock climbing.
Option (3) Cellulose is made up of glucose units. — Correct. Cellulose, found in cotton and wood, is a long chain of glucose units.
Option (4) Nylon thread is weaker than cotton thread. — Incorrect. A nylon thread is stronger than a cotton thread of the same thickness, so this statement is the one that is not true.