Which of the following is not an abrasive material ?
A. Bakelite
B. Pumice
C. Corundum
D. Carborundum
Chemical Process
Black liquor is converted into white liquor by __________________________?
Black liquor is converted into white liquor by __________________________?
A. Evaporation and burning the concentrate followed by causticisation of products
B. Multi-effect evaporation only
C. Selective liquid extraction
D. Extractive distillation
Roasting of metallurgical ores is done mainly to ___________________?
Roasting of metallurgical ores is done mainly to ___________________?
A. Dehydrate it
B. Sinter the ore
C. Remove CO2 & H2O
D. Remove arsenic & sulphur
Thermosetting materials ______________________?
Thermosetting materials ______________________?
A. Are cross-linked molecules
B. Soften on application of heat
C. Are solvent soluble
D. None of these
Silicone is a/an ___________________?
Silicone is a/an ___________________?
A. Thermoplastic
B. Inorganic polymer
C. Monomer
D. None of these
Liquor poisoning generally occurs due to the presence of _________________ in it ?
Liquor poisoning generally occurs due to the presence of _________________ in it ?
A. Ethyl alcohol
B. Impurities
C. Methyl alcohol
D. Carbonic acid
The process involved in converting rubber into a thin sheet or coating it on fabric is called ___________________?
The process involved in converting rubber into a thin sheet or coating it on fabric is called ___________________?
A. Extrusion
B. Mastication
C. Calendaring
D. Vulcanisation
Sulphur removal by heating of pyrite ore in presence of air is called its ____________________?
Sulphur removal by heating of pyrite ore in presence of air is called its ____________________?
A. Reduction
B. Roasting
C. Calcination
D. Smelting
Alcohol content in freshly prepared natural and fortified wine may be respectively around ______________ percent ?
Alcohol content in freshly prepared natural and fortified wine may be respectively around ______________ percent ?
A. 7-14 and 14-30
B. 7-14 and 40-50
C. 14 – 30 and 40-50
D. 10 – 20 and 40 – 50
Saponification number of an oil or fat____________________?
Saponification number of an oil or fat____________________?
A. Gives an idea about its molecular weight
B. Is inversely proportional to its molecular weight
C. Detects its adulteration
D. All A , B. & C.