‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ? A. V B. V/2 C.…
Ammonia gas can be dried by___________________? A. PCl5B. Quick lime C. CaCl2 D. Concentrated H2SO4
The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air? A. Ambient B. Dry bulbC. Dew point D. Wet bulb
If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________________? A. 23B. 23/2 C. 25/2 D. 21/3
Brazing filler metal used for joining steel plates_________________? A. Melts below the melting points of base metals B. Melts below 300°C C. Is copper phosphorous alloy D. Is copper
The activity of pure hydrogen gas at 1000°C and 5 atm pressure_________________? A. Is always less than 1 B. Is always greater than 1 C. Can be 5D. Depends on the choice of the standard state
Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is…
____________________ metal is used as a bearing liner material? A. Pewter B. WhiteC. Babbitt D. Gun
Regeneration of molecular sieve requires it to be heated to a temperature of about __________________ °C? A. 80-120 B. 200-300 C. 600-800D. 1000-1100
The ‘laughing gas’ is__________________? A. Nitrous oxide B. Nitric oxide C. Nitrogen trioxide D. Nitrogen pentoxide