A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

Hot wire anemometer is used to measure_______________?

A. discharge

B. velocity of gas

C. pressure intensity of gas

D. pressure intensity of liquid

Density of water is maximum at ___________________?

A. 0°C

B. 0°K

C. 4°C

D. 100°C

E. 20°C.

Property of a fluid by which its own molecules are attracted is called ________________?

A. adhesion

B. cohesion

C. viscosity

D. compressibility

E. surface tension

The property of a fluid which enables it to resist tensile stress is known as________________?

A. compressibility

B. surface tension

C. cohesion

D. adhesion

E. viscosity

The specific weight of water is 1000 kg/m” _______________?

A. at norma] pressure of 760 mm

B. at 4°C temperature

C. at mean sea level

D. all the above

E. none of the above.