When was the first state-level pollution control board established in India?
- The first state-level pollution control board was established in 1984.
- Kerala established the first state-level pollution control board in India.
- The first state-level pollution control board was established in the year 1974.
- The first state-level pollution control board was established in Gujarat.
Aii only
Bii, iii
CNone of these
Diii only
