What is lignite ? Name the two areas where lignite is found in India.

Mention two disadvantages of tank irrigation.

Name two states in which well irrigation is widely used. Mention one advantage of well irrigation in India.

 Mention any three water harvesting systems practised in India.

What grade of iron-ore is mostly mined in India ? Name two leading iron-ore producing states.

Name the type of forests found in the western part of the Western Ghats. Give two reasons why these forests are so named.

 Name the leading producer of manganese in India. Name two important industrial uses of manganese.

Mention three methods for the conservation and development of forests in India.

Give three reasons to justify the need to conserve water.

 Write two main characteristics of the Deciduous Monsoon Forests.