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 15-30 250-300 90-100 15-30 250-300 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Which of the following, when pyrolysed, produces perchloro-ethylene? Chlorinated paraffin Chlorobenzene Carbon tetrachloride Ethylene dichloride Chlorinated paraffin Chlorobenzene Carbon tetrachloride Ethylene dichloride ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Basic oxide is absent in __________ glass. Flint Quartz Pyrex All of these Flint Quartz Pyrex All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process White phosphorous is stored under water, because Its kindling temperature in dry air is very low It is unstable It is poisonous It does not react with water Its kindling temperature in dry air is very low It is unstable It is poisonous It does not react with water ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Hydrazine (N₂H₄) is used mainly as a/an Rocket fuel None of these Detergents additive Explosive Rocket fuel None of these Detergents additive Explosive ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Permanent hardness of water can be removed by Passing it through cation & anion exchangers All of these Simply boiling Adding alum Passing it through cation & anion exchangers All of these Simply boiling Adding alum ANSWER DOWNLOAD EXAMIANS APP
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