A. Sodium phosphate
B. Sodium hexametaphosphate
C. Calcium phosphate
D. Tricresyl phosphate
Calgon used in water treatment is chemically ____________________? Read More »
Chemical Process A. Increasing the oxygen concentration
B. Putting more quantity of V2O5 catalyst in the converter
C. Removing some quantity of SO3 during intermediate stage
D. Maintaining low temperature & pressure in the converter
A. Before
B. After
C. During
D. To avoid
Coagulant is used _________________ filtration? Read More »
Chemical Process A. Benzene hexachloride
B. Alkyl benzene sulphonate
C. Polytetrafluoroethylene
D. Cellulose nitrate
Which of the following is a detergent ? Read More »
Chemical Process A. Na2CO3
B. Na2CO3.10H2O
C. Na2CO3.H2O
D. Na2HCO3
A. Solvay
B. Ostwald’s
C. Haber’s
D. None of these
A. Exothermic heat
B. Hissing sound
C. Slaked lime
D. All A , B. & C .
Addition of calcium oxide to water produces___________________? Read More »
Chemical Process A. Fire extinguishing compounds
B. Fire proofing agents
C. Dyes and antiknock compounds
D. All A , B. and C.
Bromine is used in the preparation of___________________? Read More »
Chemical Process A. High electrical insulation properties
B. Sharp melting points
C. Low co-efficient of thermal expansion
D. Compressive strength much greater than their tensile strengths
A. < 0
B. 10-30
C. 250-280
D. 500-600
