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Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v):

 

A decomposition reaction is opposite to a combination reaction. A single reactant breaks down to form two or more products in a decomposition reaction. Thermal decomposition reaction uses energy in the form of heat to decompose reactants. Electrolytic decomposition reaction involves the use of electrical energy to break reactant molecules. Photolysis or photochemical decomposition involves the use of light energy.

 

(ii) Silver chloride (AgCl) when exposed to sunlight for a long duration turns grey. Consider the following statements:
I. The formation of silver by decomposition of silver chloride
II. Sublimation of silver chloride
III. Decomposition of chlorine gas from silver chloride
IV. Oxidation of silver chloride
1  Only I  
2 Only I and II  
3 Only II and III  
4 Only IV  

Ans.

(1)

Only I