Consider the following statements: If there were no phenomenon of capillarity

1. it would be difficult to use a kerosene lamp
2. one would not be able to use a straw to consume a soft drink
3. the blotting paper would paper would fail to function
4. the big trees that we see around would not have grown on the earth

Which of the following statements given above are correct?

1. 1, 2 and 3 only
2. 1, 3 and 4 only
3. 2 and 4 only
4. 1, 2, 3 and 4

Explanation

Only statements 1, 3 and 4 are correct

• Capillarity is the ability of a liquid to flow in narrow spaces without external force, due to adhesion, cohesion, and surface tension. If capillarity did not exist, kerosene would not rise in a lamp wick, blotting paper would not absorb ink and water would not travel up through the xylem in tall trees, preventing their growth. However, drinking through a straw primarily relies on atmospheric pressure rather than capillarity, so it would still be possible.

Answer: (b) 1, 3 and 4 only; Difficulty Level: Easy