Which of the following is not an abrasive material ?
Which of the following is not an abrasive material ? A. Bakelite B. Pumice C. Corundum D. Carborundum
Which of the following is not an abrasive material ? A. Bakelite B. Pumice C. Corundum D. Carborundum
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 ___________________? A. Dehydrate it B. Sinter the ore C. Remove CO2 & H2OD. Remove arsenic & sulphur
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 ___________________? A. ThermoplasticB. Inorganic polymer C. Monomer D. None of these
Liquor poisoning generally occurs due to the presence of _________________ in it ? A. Ethyl alcohol B. ImpuritiesC. Methyl alcohol D. Carbonic acid
The process involved in converting rubber into a thin sheet or coating it on fabric is called ___________________? A. Extrusion B. MasticationC. Calendaring D. Vulcanisation
Sulphur removal by heating of pyrite ore in presence of air is called its ____________________? A. ReductionB. Roasting C. Calcination D. Smelting
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____________________? A. Gives an idea about its molecular weight B. Is inversely proportional to its molecular weight C. Detects its adulterationD. All A , B. & C.