Chemical Process Styrene (a monomer for the production of polystyrene) is commercially produced by Dehydration of ethyl alcohol followed by hydrogenation Fermentation of starch Reacting ethylene oxide with acetal-dehyde Catalytic dehydrogenation of ethyl benzene Dehydration of ethyl alcohol followed by hydrogenation Fermentation of starch Reacting ethylene oxide with acetal-dehyde Catalytic dehydrogenation of ethyl benzene ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent. 75 50 < 10 > 30 75 50 < 10 > 30 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Sugar content in sugarcane on cane basis is about __________ percent by weight. 15 to 20 20 to 30 5 to 10 1 to 5 15 to 20 20 to 30 5 to 10 1 to 5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Liquefaction of gases can not be done by Merely compressing it beyond critical pressure Adiabatic expansion through a throttle valve (Joule-Thomson expansion) Exchange of heat with colder stream Adiabatic expansion against a piston or in a turbine Merely compressing it beyond critical pressure Adiabatic expansion through a throttle valve (Joule-Thomson expansion) Exchange of heat with colder stream Adiabatic expansion against a piston or in a turbine ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about 15 to 25 1 to 5 0.1 to 0.5 5 to 10 15 to 25 1 to 5 0.1 to 0.5 5 to 10 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because All of these Its calorific value is very less Tar neutralises the residual acids present in pitch It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop All of these Its calorific value is very less Tar neutralises the residual acids present in pitch It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop ANSWER DOWNLOAD EXAMIANS APP
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