During which period of orogeny were the Himalayas formed ? Name the three ranges that form a part of the Himalayan chain.
Himalayas were formed in Oligocene times but its second and third upliftments started in Miocene and post-Pliocene times respectively.
Ranges:
a. Inner Himalayas or the Great Himalayas.
b. The Lesser or the Middle Himalayas.
c. The outer or the Shiwalik Range.
Name two states/areas in India that receive rainfall from tropical cyclones and two states/areas that receives rain from temperature depressions.
On what basis are races differentiated from each other ? Which racial group is found in the North - Eastern states in India ? Where did they originate from ?
State four ways in which the Bhakra Nangal project has benefited the regions around it.
For the cultivation of tobacco, state two climatic conditions and two features of soil that are required by the crop.