A. Explosive
B. White lead
C. Filter aid
D. ZnS (white pigment)
0
Presence of carbonaceous matter in the sewage____________________?
0
Dechlorination of treated water is necessary to __________________?
A. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic
creatures
B. Reduces sulphate ions to sulphides causing obnoxious smell
C. Increases the quantity of chlorine used for its purification
D. All A, B. and C.
0
______________________ of quicklime produces slaked lime ?
A. Remove residual turbidity
B. Reduce the bacterial load on filter
C. Control taste and odour
D. Remove chlorinous taste
0
An oil is converted into fat by its___________________?
A. Hydration
B. Dehydration
C. Hydrogenation
D. None of these
0
Economics of ‘Solvay Process’ depends upon the efficiency of __________________?
A. Hydrogenation
B. Hydrolysis
C. Hydrocracking
D. Hydration
0
At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system) ?
A. Carbonating tower
B. Ammonia recovery
C. Ammonia recovery and size of the plant
D. Ammoniation of salt solution
0
Extraction of _________________ employs an electrolytic process ?
A. P
B. √P
C. P2
D. 1/P
0
Baking soda is chemically represented by__________________?
A. Aluminium
B. Silver
C. Copper
D. All A, B. and C
0
Inversion of sucrose produces_____________________?
A. Na2CO3
B. NaHCO3
C. Na2CO3.H2O
D. Na2CO3.10H2O
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