Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Basic Concepts of Chemistry
Consider the following features of a particular gas-
1. It is a reddish-brown gas with pungent smell.
2. It indirectly causes acid-rain.
Which of the following gases is being talked about?
1
CFC
2
SO2
3
NO2
4
More than one of the above
5
None of the above