Category: Chemical Process

A. Isopropyl alcohol
B. Tetra-ethyl lead
C. Zeolite
D. Cumene

A. Gypsum
B. Silicates
C. Sodium silicate
D. Carbonates

A. Avoid mechanical weakening of fibre
B. Remove lignin by way of crystallisation
C. Increase the cellulose content
D. None of these

A. Al2O3
B. SiO2
C. CaO
D. Fe2O3

A. Can use low grade brine
B. Has less corrosion problems
C. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl
D. Both B. and C.

A. Light & heavy leather respectively
B. Heavy & light leather respectively
C. Both light & heavy leather
D. Neither light nor heavy leather

A. Average degree of polymerisation of the polymer is 1966
B. Number of carbon atoms between two nitrogen atoms are 6
C. Number of nitrogen atoms between two carbon atoms are 6
D. Polymer was first synthesised in 1966

A. Lime
B. Sulphuric acid
C. Chlorine
D. Sodium bisulphite

A. 70
B. 55
C. 80
D. 94

A. A black, sticky & viscous liquid
B. Used in the manufacture of greases, emulsions & soaps
C. Composed mainly of rosin & fatty acids
D. All A , B. & C.