Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Knowledge Economy Human Development Indices and Concepts
The decades_______ are referred to as the period of population explosion in India.
1
from 1951 to 1981
2
from 1921 to 1951
3
from 1901 to 1921
4
More than one of the above
5
None of the above