Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Surface Chemistry
In colloids, which of the following is a correct example of foam?
1
Pumice
2
Mist
3
Jelly
4
More than one of the above
5
None of the above