Chemical Engineering — Test 34
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Question 1
One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to_________________?
Question 2
Plasticisers are added to synthetic plastics to____________________?
Question 3
Celluloid is chemically___________________?
Question 4
Permanent hardness of water can be removed by___________________?
Question 5
Viscose rayon is__________________?
Question 6
Nitric acid is not used in the manufacture of______________________?
Question 7
Sea water contains about ______________________ ppm of bromine ?
Question 8
Teflon is___________________?
Question 9
In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because___________________?
Question 10
Carbon disulphide is mainly used in the production of______________________?