Chemical Process The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is None of these Ultraviolet light Dilute H₂SO₄ Oleum None of these Ultraviolet light Dilute H₂SO₄ Oleum ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Vulcanisation of rubber Increases its ozone & oxygen reactivity Decreases its tensile strength Converts its plasticity into elasticity Increases its oil & solvent resistance Increases its ozone & oxygen reactivity Decreases its tensile strength Converts its plasticity into elasticity Increases its oil & solvent resistance ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The most reactive allotropic form of phosphorus is __________ phosphorus. Black Yellow Violet Red Black Yellow Violet Red ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C. -83 -196 -218 -183 -83 -196 -218 -183 ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Prussian blue is chemically represented by AlF₃ . 3NaF FeO.TiO₂ Fe₄ [Fe (CN₆)₃] Ca SO₄ . 2H₂O AlF₃ . 3NaF FeO.TiO₂ Fe₄ [Fe (CN₆)₃] Ca SO₄ . 2H₂O ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Which of the following is not required in the manufacture of soda ash by Solvay process? Nitric acid Ammonia None of these Limestone Nitric acid Ammonia None of these Limestone ANSWER DOWNLOAD EXAMIANS APP
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