Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Which of the following gas is emitted when a metal reacts with sodium hydroxide?
1
Oxygen
2
Hydrogen
3
Nitrogen
4
More than one of the above
5
None of the above