Related Questions

Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation?
A Decrease in effect
B Increase in thrust
C Develops noise
D Develops high pressure
The undesirable property of a refrigerant is
A Non-toxic
B Non-flammable
C Non-explosive
D High boiling point
High __________ is an undesirable property for a good refrigerant.
A Specific heat
B Latent heat of vaporisation
C Viscosity
D Specific vapor volume
Pick out the undesirable property for a good refrigerant.
A High thermal conductivity
B Low freezing point
C Large latent heat of vaporisation
D High viscosity
Which of the following is desirable in petrol (gasoline) but undesirable in kerosene?
A Paraffins
B Aromatics
C Mercaptans
D Naphthenic acid
Which of the following is an undesirable property in a tower packing?
A Large surface per unit volume
B Large free cross-section
C Low weight per unit volume
D Large weight of liquid retained
Which of the following reactions is undesirable in the production of catalytically reformed gasoline?
A Dehydrogenation of naphthene
B Dehydrogenation of lower paraffins
C Dehydrocyclisation of higher paraffins
D Isomerisation of paraffins
Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore?
A High fusibility & fluidity
B High thermal conductivity
C Low density
D High chemical activity
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
Which of the following is an undesirable characteristic for the solvent used in gas absorption?
A Low vapor pressure
B Low viscosity
C High gas solubility
D None of these

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