Question

Which of the following statements is incorrect?

• A. Blood is more viscous than water.
• B. The blood pressure in human is greater at the feet than at the brain
• C. The angle of contact of mercury with glass is obtuse white that of water with glass is acute
• D. A spinning cricket ball in air follows a parabolic Trajectory

Answer 1

Answer: (D)

A spinning cricket ball in air follows a parabolic

Trajectory

Answer 2

As $\eta _ { \text {blood } } > \eta _ { \text {water } }$ therefore blood is more viscous than water.

Hence option (1) is a correct statement.

The height of the blood column in the human body is more at feet than at the brain. Consequently, the blood pressure in human is greater at the feet than in the brain.

Hence, option (2) is correct statement.

The angle of contact with mercury with glass is obtuse while that of water with glass is acute.

Hence option (3) is a correct statement.

A spinning cricket ball in air does not follow a parabolic trajectory.

Hence, option (4) is an incorrect statement.