The following reaction is an example of a
$2 P b (N O_{3})_{2} (s) H e a t - -- \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$
I. Combination reaction
II. Decomposition reaction
III. Endothermic reaction
IV. Exothermic reaction

I & III

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II & III

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II & IV

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I & IV

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Solution

The correct option is B II & III
In the given reaction a single compound $(P b (N O_{3})_{2})$ on heating is breaking down to form other different compounds $(P b O, N O_{2}, O_{2})$ . Hence, it is a type of decomposition reaction.
As heat is provided for the reaction to happen, it is also a endothermic reaction.

In other words, we can also say that it is a thermal decomposition reaction.
So both II - decomposition & III - endothermic are correct.

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Similar questions

The following reaction is an example of a
$2 P b (N O_{3})_{2} (s) H e a t - -- \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$
I. Combination reaction
II. Decomposition reaction
III. Endothermic reaction
IV. Exothermic reaction

Q. The reaction given below is an example of a/an:

2 {Pb(NO}_{3})_{2} (s) Heat - - \to 2 PbO(s) + 4 {NO}_{2} (g) + O_{2} (g)

Q. Slaking of lime is
(i) an endothermic reaction
(ii) an exothermic reaction
(iii) a combination reaction
(iv) a decomposition reaction

Q. Consider the following reaction:

{HNO}_{3} (aq) + NaOH (aq) \to {NaNO}_{3} (aq) + H_{2} O (l)

The given reaction is an example of a
i. decomposition reaction
ii. combination reaction
iii. double displacement reaction
iv. neutralisation reaction

[0.8 marks]

Q. (a) What do you understand by exothermic and endothermic reactions?
(b) Give one example of an exothermic reaction and one of an endothermic reaction.
(c) Which of the following are endothermic reactions and which are exothermic reactions?
(i) Burning of natural gas
(ii) Photosynthesis
(iii) Electrolysis of water
(iv) Respiration
(v) Decomposition of calcium carbonate

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The following reaction is an example of a 2Pb(NO3)2(s)Heat−−−→2PbO(s)+4NO2(g)+O2(g) I. Combination reaction II. Decomposition reaction III. Endothermic reaction IV. Exothermic reaction

The following reaction is an example of a
$2 P b (N O_{3})_{2} (s) H e a t - -- \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$
I. Combination reaction
II. Decomposition reaction
III. Endothermic reaction
IV. Exothermic reaction