Consider the following:

1. Carbon monoxide
2. Nitrogen oxide
3. Ozone
4. Sulphur dioxide
   Excess of which of the above in the environment is/are cause(s) of acid rain?

Consider the following rivers:

1. Barak
2. Lohit
3. Subansiri
   Which of the above flow through Arunachal Pradesh?

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions?

The money multiplier in an economy increases with which one of the following?

Consider the following statements:

1. The Indian Flying Fox is placed under the 'vermin' category in the Wild Life (Protection) Act, 1972.
2. The Indian Flying Fox feeds on the blood of other animals.
   Which one of the following is correct in respect of the above statements?