Chemical Engineering :: Chemical Engineering Basics
-
A gas having a negative Joule-Thompson co-efficient, when throttled, will
-
Annealing of metal does not
-
Which of the following is a common constituent of both paint and oil varnish ?
-
Lithium is a useful alloying addition to aluminium, because it
-
Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time.
-
Pick out the wrong statement about coating/electroplating of metals.
-
In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).
-
Brinell hardness number (BHN) of a material is a number, which has
-
Vanadium addition to steel improves its
Whatsapp
Facebook
|
A.
Phosphate coating is used as an excellent base for paints & enamels.
|
|
B.
Phosphate coating is less corrosion resistant than chromate coating.
|
|
C.
The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode.
|
|
D.
Calorising is the process of coating steel with chromium.
|