Question

8 The example for exothermic reaction is 314 foaut fafonie et fča Grecida
a)Melting of ice cubes ਬਰਫ਼ ਦਾ ਪਿਘਲਣਾ
b) Decomposition of vegetable matter into compost ਸਬਜੀਆਂ ਦੇ ਛਿਲਕਿਆਂ ਦਾ ਖਾਦ ਆਦਿ ਵਿੱਚ ਅਪਘਟਨ ਹੋਣਾ
c)Cooking of an egg ਅੰਡੇ ਨੂੰ ਪਕਾਉਣਾ
d)Baking of bread ਡਬਲ ਰੋਟੀ ਦੇ ਨਿਰਮਾਣ ਸਮੇਂ
9 Pb(s) +CuClz (aa) > PbCl2 (aq) +Cu(s)
ਮ​

Answer 1

Answer:

Option b

Explanation:

Exotermic reaction is one in which heat is absorbed since in above actions some are physical change or example of endothermic change. And in option b in decomposition bacteria breaksdown complex organic substance which release energy. So your ans is option b