railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test General Knowledge Ecology and Environment Environmental pollution
Which of the following is mainly responsible for the causes of water pollution?
1. Afforestation
2. Oil refineries
3. Paper factories
Choose the correct answer from the options given below:
1
1 and 2 Only
2
2 and 3 Only
3
1 and 3 Only
4
1, 2 and 3