A. High cost of mercury
B. High specific gravity of mercury
C. Non-availability of high purity mercury
D. Pollution of water stream by mercury
A. Refractory material
B. Synthetic resin
C. Artificial abrasive
D. Blue pigment
A. Cryolite
B. Chalcopyrite
C. Rock phosphate
D. None of these
A. Slag cement
B. Glasses
C. Porcelain/Potteries
D. Teflon
A. Phosphoric acid
B. Phosphorous
C. Superphosphates
D. All A , B. and C
A. Al2O3
B. SiO2
C. CaO
D. Fe2O3
A. C+ ½O2 = CO
B. CO + 3H2 = CH4 + H2O
C. CaCO3 = CaO + CO2
D. CO + ½O2 = CO2
A. Benzol-toluol-xylol
B. Benzol-toluene-xylene
C. Benzene-toluol-xylol
D. Benzene-toluene-xylene
A. Its calorific value is very less
B. Tar neutralises the residual acids present in pitch
C. It reduces viscosity and imparts fluidity for its transportation through pipelines at economic
pressure drop
D. All A, B. and C.
A. Vertical shaft
B. Rotary
C. Fluidised bed
D. Fixed bed