Question

Q8. Ravi appeared in class test where he wrote some statements, but he was confused to know the statements which were related to “Reversible changes”. Would you help him to choose out of the following?/ ​

Answer 1

Answer:

reversible changes means that changes that can be done again and again

for example melting of ice

Answer 2

a/ਗੋਬਰ ਤੋਂ ਬਾਇਓਗੈਸ ਬਣਾਉਣਾ/

b.ਦੁੱਧ ਤੋਂ ਪਨੀਰ ਬਣਾਉਣਾ/ ਚੱਟਾਨਾਂ ਦਾ ਟੁੱਟਨਾਂ/

d/ਪਾਣੀ ਨਾਲ ਭਰੇ ਖੇਤਰ ਵਿੱਚੋਂ ਲੰਘਣ ਲਈ ਪਹਿਰਾਵੇ ਨੂੰ ਮੌੜਨਾ/