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
A. Sintering
B. Annealing
C. Shag or forming
D. Melting
Which of the following processes is absent in glass manufacturing process ? Read More »
Chemical Process A. Activated clay
B. Bromine
C. Chlorine or chlorine dioxide
D. Magnesium sulphite
Bleaching of paper pulp is done with__________________? Read More »
Chemical Process