Related Questions

Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is
A Water
B Carbon tetrachloride
C Paraffin
D Ethylene glycol
Which of the following is a commonly used manometric liquid for low pressure range?
A Ethyl alcohol
B Carbon tetrachloride
C Glycerol
D Ethylene glycol
Which of the following is an undesirable property of a manometric liquid?
A Non-sticky & non-corrosive nature
B High vapour pressure
C Low viscosity & surface tension
D Low co-efficient of thermal expansion
A batch reactor suffers from following disadvantage.
A Poor product quality control
B High labour and handling cost
C High shutdown time requirement for emptying, cleaning and refilling
D All of the above
Assam coals suffers mainly from the disadvantage of high __________ content.
A Ash
B Volatile matter
C Sulphur (4-6%)
D Moisture
Batch tray dryers suffers from the disadvantage of
A High maintenance cost
B Non-uniform & low production rate
C High labour cost & low heat economy
D All of the above
Aluminium as a material of construction suffers from the disadvantage of
A Very high cost
B Rather low tensile strength
C Very low strength to weight ratio
D Scarce availability
Manometric head, in case of a centrifugal pump, is equal to
A Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
B Work-done per kN of water Losses within the impeller
C Energy per kN at outlet of impeller Energy per kN at inlet of impeller
D All of the above
Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 grams of solution X is mixed with 2 grams of solution Y, then liquid M accounts for what percent of the weight of the resulting solution?
A 6.09%
B 10%
C 10.75%
D 21.5%
The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 degree . If the capillary tube is dipped vertically in the liquid, then the liquid:
A Will rise in the tube
B Will get depressed in the tube
C Will rise -up to 10 cm in the tube and will over flow
D Will neither rise nor fall in the tube.

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