Chemical Engineering — Test 29
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Question 1
____________________ metal is used as a bearing liner material?
Question 2
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 not equal to 8.8 ?
Question 3
The activity of pure hydrogen gas at 1000°C and 5 atm pressure_________________?
Question 4
Brazing filler metal used for joining steel plates_________________?
Question 5
If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________________?
Question 6
The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?
Question 7
Ammonia gas can be dried by___________________?
Question 8
‘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) ?
Question 9
On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is__________________?
Question 10
Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30°C in temperature ?