Correct Answer:- Option-A
Question58:-Rheostat is used to vary:
A:-current
B:-potential difference
C:-power
D:-resistance
Correct Answer:- Option-A
Question59:-Water movement against gravity is due to :
A:-Osmosis
B:-Respiration
C:-Photosynthesis
D:-Transpiration
Correct Answer:- Option-D
Question60:-During rainy season, it is difficult to open and close doors and windows due to:
A:-Imbibition
B:-Endomosis
C:-Exomosis
D:-Diffusion
Correct Answer:- Option-A
Question61:-The odour of sulphur dioxide gas is:
A:-Pungent
B:-Odourless
C:-Sweet smelling
D:-Foul smelling
Correct Answer:- Option-A
Question62:-The problems of fluid statics are influenced by the following forces:
A:-gravity and viscous forces
B:-gravity and pressure forces
C:-viscous and surface tension forces
D:-gravity and surface tension forces
Correct Answer:- Option-B
Question63:-Mercury is generally used in manometers for measuring:
A:-low pressure accurately
B:-large pressure accurately
:-all pressures except the smaller ones
D:-very low pressures
Correct Answer:- Option-C
Question64:-The flow in a river during the period of heavy rainfall is:
A:-steady, uniform, two-dimensional
B:-unsteady,uniform and three-dimensional
:-unsteady,non-uniform and three-dimensional
D:-steady,non-uniform and three dimensional
Correct Answer:- Option-C
Question65:-A pitot-tube is an instrument for measuring:
A:-pressure of flow
ischarge of fluid
C:-velocity of flow
D:-total energy
Correct Answer:- Option-C
Question66:-The coefficient of discharge of a venturimeter lies within the limits:
A:

D:-0.95-0.99
Correct Answer:- Option-D
Question67:-The Reynolds experiments for determining the character of flow in pipes involved:
A:-the measurement of velocity by pitot-tube
B:-measurement of flow only