engineering recuitment BARC Stipendiary Trainee Category II 2023 Mock Test General Science Chemistry Chemistry in Everyday Life
Which of the following statements is correct?
A) Chemical changes are usually irreversible
B) In a Physical change, there is always change in state
1
A is true and B is false
2
A is false and B is true
3
Both A and B are true
4
Both A and B are false