List of top Questions asked in GATE CE- 2024

What is the CORRECT match between the air pollutants and treatment techniques given in the table

Air Pollutants		Treatment techniques
P	NO2	i	Flaring
Q	SO2	ii	Cyclonic separator
R	CO	iii	Lime scrubbing
S	Particles	iv	NH3 injection

How many combinations of non-null sets A, B, C are possible from the subsets of {2, 3, 5} satisfying the conditions: (i) A is a subset of B, and (ii) B is a subset of C?