Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
The changes that occur in a compound without changing its chemical composition is called physical changes. Which of the following is true regarding the physical changes?
1
Physical changes can not be reversed
2
Physical changes can not occur by heating or cooling the substance
3
No new product is formed in physical changes
4
More than one of the above.
5
None of the above