Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Which of the following is not a chemical change?
1
Ripening of fruits
2
Digestion of food
3
Freezing of water
4
More than one of the above
5
None of the above