Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Chemistry S - Block Group 1 Elements (Alkali Metals)
What are the special features of the following group of elements?
1. All these elements are metals
2. All these elements react with water to form hydrogen gas
3. All these elements have a valency 1
1
Halogen group
2
Alkali metal group
3
Alkaline earth metal group
4
More than one of the above
5
None of the above