Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Which of the following statement is correct for chemical reaction?
1
Chemical reactions are reversible
2
Energy is absorbed during all chemical reactions
3
Chemical reaction involves breaking and making of chemical bonds
4
More than one of the above.
5
None of the above