A) In Nelson method of \[\text{NaOH}\] preparation, \[\text{C}{{\text{l}}_{2}}\] is liberated at anode
B) With hot and concentrated \[\text{NaOH, C}{{\text{l}}_{\text{2}}}\] gas gives \[\text{NaOCl}\]
C) \[\text{NaOH}\] reacts with white phosphorus giving phosphine
D) \[\text{NaOH}\] is used in rayon industry
Correct Answer: B
Solution :
Chlorine reacts with hot and conc. \[\text{NaOH}\] to give sodium chlorate. \[\underset{\text{Hot}\,\text{+}\,\text{conc}\text{.}}{\mathop{6NaO}}\,+3C{{l}_{2}}\xrightarrow{{}}5NaCl+\underset{\text{sodium}\,\text{chlorate}}{\mathop{NaCl{{O}_{3}}}}\,+3{{H}_{2}}O\]
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