Child Sex Ratio as per the provisional results of the 2011 Census, in India is

Choose the correct statement

1. There is no definition of Scheduled Tribe in Constitution of India.

2. Todas are found in Nilgiri areas.

3. Santhals belong to Chotanagpur area.

In which of the following states, is Child Sex Ratio as per the provisional results of the $2011$ Census, the lowest?

In the Indian context, the term 'De-notified tribes' refers to: 

In which one of the following places is the Shompen tribe found? 

Assertion (A) Physiological density is preferable to arithmetic density as an index of population density.
Reason (R) Physiological density is based on arable land while arithmetic density is based on total area.

Consider the following specific stages of demographic transition associated with economic development:
$1.$ Low birth rate with low death rate.
$2.$ High birth rate with high death rate.
$3.$ High birth rate with low death rate.

Select the correct order of the above stages using the codes given below: