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Chemistry CBSE Live product
Class 10
Chemical reaction and equations
Introduction to chemical reactions and equations
2.
HOTS - Physical and chemical changes
Question:
1
m.
Choose the correct answer given below:
Which of the following statements is/are true?
The total mass of the substance remains the same in a chemical change
A chemical change is permanent and irreversible
A physical change is temporary and reversible
All of these
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