Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
A piece of Copper is put in a test tube containing Hydrochloric acid. Which of the following statements will be true?
1
No reaction takes place
2
Reaction is slow
3
"Pop Up" sound is heard
4
More than one of the above
5
None of the above