Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Classification of Elements and Periodicity in Properties
Calcium hypochlorite is commonly known as ______________.
1
bordex mixture
2
bleaching powder
3
laughing gas
4
More than one of the above
5
None of the above