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+3 votes
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a. Which of the following reactions is/ are an endothermic reaction(s) where decomposition also happens? 

  • Respiration 
  • Heating of lead nitrate 
  • Decomposition of organic matter 
  • Electrolysis of acidified water

b. Silver chloride when kept in the open turns grey. Illustrate this with a balanced chemical equation.

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1 Answer

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Best answer

a. Heating of lead nitrate; and electrolysis of acidified water

b. 2AgCl(s) \(\overset{Sunlight}{\longrightarrow}\) 2Ag(s) + Cl2 (g) 

(No deduction for not mentioning state of reactants and products.)

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