Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Reaction
Metal like ______ reacts with cold water so violently and in an exothermic way that the evolved hydrogen immediately catches fire.
1
Potassium
2
Magnesium
3
Zinc
4
More than one of the above
5
None of the above