Upper, Middle and Lower Ganga Plains

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What is the average height of Lower Ganga plains?

1. 100 meters
2. 70 meters
3. 50 meters
4. 60 meters

Q. Select the correct pairs with regard to the subdivisions of the Ganga plains.

1. Middle Ganga Plains
2. Chambal river
3. Ghagra river
4. Hugli river
5. Lower Ganga Plains
6. Upper Ganga Plains