Mercury is often used in barometer because _________________?
		A. it is the best liquid
B. the height of barometer will be less
C. its vapour pressure is so low that it may be neglected
D. both B. and C.
E. it moves easily
		A. it is the best liquid
B. the height of barometer will be less
C. its vapour pressure is so low that it may be neglected
D. both B. and C.
E. it moves easily
		A. Venturimeter
B. Orifice plate
C. hot wire anemometer
D. rotameter
E. pitot tube
		A. pressure in pipes, channels etc.
B. atmospheric pressure
C. very low pressure
D. difference of pressure between two points
E. rain level
		A. decreases linearly with elevation
B. remains constant
C. varies in the same way as the density
D. increases exponentially with elevation
E. unpredictable
		A. gas law
B. Boyle’s law
C. Charle’s law
D. Pascal’s law
E. McLeod’s law
		A. Bourdon tube
B. Pirani Gauge
C. micro-manometer
D. ionisastion gauge
E. McLeod gauge
		A. shear stress anctthejiate of angular distortion
B. shear stress and viscosity
C. shear stress, velocity and viscosity
D. pressure, velocity and viscosity
E. shear stress, pressure and rate of angular distortion
		A. 1
B. 1.2
C. 0.8
D. 0.75
E. 1.25
		A. linearly
B. first slowly and then steeply
C. first steeply and then gradually
D. unpredictable
E. none of the above
		A. force of adhesion
B. force of cohesion
C. force of friction
D. force of diffusion
E. none of die above