Chemical Process Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C. 75 to 80 -5 to 0 5 to 10 30 to 50 75 to 80 -5 to 0 5 to 10 30 to 50 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C. 250-300 15-30 90-100 250-300 15-30 90-100 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Pick out the exothermic reaction out of the following: CaC₂ + H₂O = Ca(OH)₂ + C₂H₂ C + H₂O = CO + H₂ MgCO₃ = MgO + CO₂ All of these CaC₂ + H₂O = Ca(OH)₂ + C₂H₂ C + H₂O = CO + H₂ MgCO₃ = MgO + CO₂ All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Dacron (or terylene) fibres as compared to nylon's fibres have Poorer resistance to alkalis Poorer dyeability All of these Better heat & acid resistant properties Poorer resistance to alkalis Poorer dyeability All of these Better heat & acid resistant properties ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Black liquor is converted into white liquor by Multi-effect evaporation only Selective liquid extraction Evaporation and burning the concentrate followed by causticisation of products Extractive distillation Multi-effect evaporation only Selective liquid extraction Evaporation and burning the concentrate followed by causticisation of products Extractive distillation ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Pick out the false statement pertaining to water treatment. Aeration of water is effective in CO₂ removal Sodium sulphate or sodium carbonate do not cause hardness in water Water with pH value less than 7, is acidic The zeolite water softening process reduces the hardness of water by not more than 50% Aeration of water is effective in CO₂ removal Sodium sulphate or sodium carbonate do not cause hardness in water Water with pH value less than 7, is acidic The zeolite water softening process reduces the hardness of water by not more than 50% ANSWER DOWNLOAD EXAMIANS APP
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