Materials and Construction — Test 9
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Question 1
Balls in a ball mill are usually made of__________________?
Question 2
In the Kraft (sulphate) process for the paper manufacture, the digestor is made of________________?
Question 3
Galvanising (i.e., zinc coating) of steel sheets is done to______________________?
Question 4
A bearing metal should not have___________________?
Question 5
100% H2SO4 at 30°C can’t be stored in a vessel made/lined with ___________________?
Question 6
Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of ______________ as mercury does not amalgamate with it?
Question 7
Which of the following is not a non-ferrous alloy ?
Question 8
Which of the following is a light alloy ?
Question 9
Generally _____________ are subjected to galvanising (i.e., zinc coating)?
Question 10
18-4-1 high speed steel contains 18%, 4% and 1% respectively of____________________?