Chemical Process High purity nitrogen is used in Both A & B Neither A nor B Fire fighting purposes Making protective gas (95% N₂ + 5% H₂) for annealing of cold rolled steel strip coils Both A & B Neither A nor B Fire fighting purposes Making protective gas (95% N₂ + 5% H₂) for annealing of cold rolled steel strip coils ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Permanent hardness of water is due to the presence of calcium & magnesium Carbonate Sulphates & chlorides Bi-carbonates None of these Carbonate Sulphates & chlorides Bi-carbonates None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Helium is produced on commercial scale from Natural gas Air Coke oven gas None of these Natural gas Air Coke oven gas None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Vulcanisation of rubber Increases its ozone & oxygen reactivity Converts its plasticity into elasticity Increases its oil & solvent resistance Decreases its tensile strength Increases its ozone & oxygen reactivity Converts its plasticity into elasticity Increases its oil & solvent resistance Decreases its tensile strength ANSWER DOWNLOAD EXAMIANS APP
Chemical Process High acid value of an oil or fat is an indication of Storage under improper conditions None of these Its smaller molecular weight Absence of unsaturation Storage under improper conditions None of these Its smaller molecular weight Absence of unsaturation 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. 90-100 250-300 15-30 90-100 250-300 15-30 ANSWER DOWNLOAD EXAMIANS APP
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