Chemical Engineering - Chemical Process

11.
Chalcopyrite is the main ore of
copper
lead
tin
iron
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
The end bleaching agent used to move last traces of colour bodies from the pulp is
chlorine dioxide (ClO2)
MgO
SO2 gas
mercaptans
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
Bio-degradable detergents
can be readily oxidised.
pose problem in sewerage plant.
have an isoparaffinic structure.
should not be used as it spoils the cloth.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
Sea water contains about __________ ppm of bromine.
5
70
500
1700
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
Which allotrope of sulphur is insoluble in carbon disulphide ?
Rhombic sulphur
Monoclinic sulphur
Plastic sulphur
Milk of sulphur
Answer: Option
Explanation:
No answer description is available. Let's discuss.