Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Which of the following reactions is the metal displacement reaction? Choose the right option.
1
2Pb(NO3)2 → 2PbO + 4NO2 + O2↑
2
2KClO3 \(\stackrel{\Delta}{\longrightarrow}\) 2KCl + 3O2
3
Cr2O3 + 2Al \(\stackrel{\Delta}{\longrightarrow}\) Al2O3 + 2Cr
4
More than one of the above
5