Question

Which of the following on thermal decomposition gives oxygen gas ?

A. $$A{g_2}O$$
B. $$P{b_3}{O_4}$$
C. $$Pb{O_2}$$
D. $${\text{All of these}}$$  
Answer :   $${\text{All of these}}$$
Solution :
$$\eqalign{ & 2A{g_2}O\left( s \right) \to 4Ag\left( s \right) + {O_2}\left( g \right) \cr & 2P{b_3}{O_4}\left( s \right) \to 6PbO\left( s \right) + {O_2}\left( g \right) \cr & 2Pb{O_2}\left( s \right) \to 2PbO\left( s \right) + {O_2}\left( g \right) \cr} $$

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

A. $${N_2}{O_5}$$
B. $${N_2}{O_4}$$
C. $$N{O_2}$$
D. $${N_2}{O_3}$$
Releted Question 2

The temporary hardness of water due to calcium carbonate can be removed by adding —

A. $$CaC{O_3}$$
B. $$Ca{\left( {OH} \right)_2}\,$$
C. $$CaC{l_2}$$
D. $$\,HCl$$
Releted Question 3

Which of the following is most stable to heat

A. $$HCl$$
B. $$HOCl$$
C. $$HBr$$
D. $$HI$$
Releted Question 4

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

Practice More Releted MCQ Question on
P - Block Elements


Practice More MCQ Question on Chemistry Section