1521. Sphygmomanometer measures :
A. Density of water
B. Blood pressure *
C. Milk density
D. None of the above
1522. At high altitude the blood oozes out of the nose and ear because :
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decreases there *
D. The density of blood decreases at high altitudes
1523. The velocity of falling raindrops attains limited value because of :
A. Up thrust of air *
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
1524. Ball pen functions on the principle of :
A. Viscosity *
B. Boyle’s law
C. Gravitational force
D. Surface tension
1525. With the increase of temperature viscosity :
A. Increases
B. Decreases *
C. Remains same
D. Doubles
1526. According to stokes law, drag or viscous force depends on :
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity *
1527. Th smooth or steady-line flow is known as :
A. Laminar flow *
B. Turbulent flow
C. Both A and B
D. None of the above
1528. Blood has a density :
A. Nearly equal to that of water *
B. Greater than water
C. Lesser than water
D. None of the above
1529. The pressure will be low where the speed of the fluid is :
A. Zero
B. High *
C. Low
D. Constant
1530. At high altitude the blood oozes out of the nose and ear because :
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decreases there *
D. The density of blood decreases at high altitudes