Chemical Process Shrinkage volume in cement setting does not depend upon the Water to cement ratio Sand to cement ratio Ambient temperature fluctuation Drying period Water to cement ratio Sand to cement ratio Ambient temperature fluctuation Drying period ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Use of chlorine in the treatment of sewage Aids in flocculation Causes bulking of activated sludge Increases the biological oxygen demand(BOD) Helps in grease separation Aids in flocculation Causes bulking of activated sludge Increases the biological oxygen demand(BOD) Helps in grease separation 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 90-100 15-30 250-300 90-100 15-30 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Lindane is BHC (Benzene Hexa Chloride) containing 99% γ-isomer A by-product of BHC manufacture Not a fumigant Both B and C BHC (Benzene Hexa Chloride) containing 99% γ-isomer A by-product of BHC manufacture Not a fumigant Both B and C ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Trinitro-toluene (TNT) is Used in glycerine manufacture Used in dye manufacture An explosive None of these Used in glycerine manufacture Used in dye manufacture An explosive None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Pick out the true statement pertaining to water treatment. Activated carbon can be used for taste & odour control without subsequent filtration Normally, the turbidity is removed by adding a coagulent prior to sedimentation Application of activated carbon reduces the temporary hardness of water Slow sand filters can remove colour completely Activated carbon can be used for taste & odour control without subsequent filtration Normally, the turbidity is removed by adding a coagulent prior to sedimentation Application of activated carbon reduces the temporary hardness of water Slow sand filters can remove colour completely ANSWER DOWNLOAD EXAMIANS APP
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