Class 7 Exam  >  Class 7 Questions  >  Chemical changes area)Always irreversibleb)Mo... Start Learning for Free
Chemical changes are
  • a)
    Always irreversible
  • b)
    Mostly reversible
  • c)
    Always reversible
  • d)
    Mostly irreversible
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Chemical changes area)Always irreversibleb)Mostly reversiblec)Always r...
Crystals of copper sulphate are prepared by the method of crystallization. It is an example of physical change.
So option D is correct answer. 
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Most Upvoted Answer
Chemical changes area)Always irreversibleb)Mostly reversiblec)Always r...
This change is called permanent or irreversible because the previous form of matter cannot be revived by physical processes
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Community Answer
Chemical changes area)Always irreversibleb)Mostly reversiblec)Always r...
Chemical changes are always irreversible because for example we cant convert butter to milk.
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Chemical changes area)Always irreversibleb)Mostly reversiblec)Always reversibled)Mostly irreversibleCorrect answer is option 'A'. Can you explain this answer?
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