Which of the following weathering is also known as Mechanical weathering?

1. Chemical weathering
2. Physical weathering
3. Biological weathering
4. None of the above

Which of the following landforms is formed in the lower course of the river?

1. V-shaped valley
2. Meander
3. Delta
4. Waterfall

In which course of the river the river erosion is more lateral than vertical?

1. Upper course
2. Middle course
3. Lower course
4. All the above

The limestone topography is affected through which of the following weathering process?

1. Physical weathering
2. Biological weathering
3. Oxidation
4. Carbonation