White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$ This reaction is an example of
A.
Oxidation
B.
Reduction
C.
oxidation and reduction
D.
Neutralisation
Answer :
oxidation and reduction
Solution :
$$\mathop {{P_4}}\limits^0 + 3NaOH + 3{H_2}O \to $$ $$P\mathop {{H_3}}\limits^{ + 3} + 3Na{H_2}P\mathop {{O_2}}\limits^{ - 1} $$
It is redox reaction.
(i) Oxidation number increases during oxidation reaction and decreases during reduction reaction.
(ii) In a neutralisation reaction acids and bases reacts together to form salt and water.
Releted MCQ Question on Inorganic Chemistry >> P - Block Elements
Releted Question 1
The reddish brown coloured gas formed when nitric oxide is oxidised by air is