Question

The natural rate of increase is continuously in an increasing order in which of the following phase of population growth ?

• A. Phase-I
• B. Phase-II
• C. Phase-III
• D. Phase-IV
• A. 1921 – 1951
• B. 1931 – 1961
• C. 1941 – 1971
• D. 1951 – 1981
• A. 1971 – 1981
• B. 1981 – 1991
• C. 1991 – 2001
• D. 2001 – 2011

Answer 1

The Correct Option is C

Concept:
• India's population growth is divided into four distinct phases based on growth rates.

• Phase I (\( 1901-1921 \)): Stagnant growth.

• Phase II (\( 1921-1951 \)): Steady growth.

• Phase III (\( 1951-1981 \)): Population explosion.

• Phase IV (\( 1981- \text{Present} \)): High growth with a declining trend.

Step 1: Examine the data table for natural increase rates
The 'Rate of Natural Increase' column in the provided table shows:
\( 1941-1951 \): \( 12.5 \)
\( 1951-1961 \): \( 18.9 \)
\( 1961-1971 \): \( 22.1 \)
\( 1971-1981 \): \( 22.2 \)

Step 2: Identify the period of continuous increase
From \( 1951 \) to \( 1981 \), the natural increase rate rises continuously from \( 12.5 \) (pre-phase) to \( 22.2 \).
This period is known as the phase of "Population Explosion" due to a rapid fall in death rates while birth rates remained high.

Step 3: Match with the designated phase
The period from \( 1951 \) to \( 1981 \) corresponds to Phase-III.
After \( 1981 \), the rates start decreasing (\( 19.7 \rightarrow 17.0 \rightarrow 14.7 \)).

Answer 2

Concept:
• India's population growth history is divided into four distinct stages based on birth and death rate trends.

• These phases help in understanding the demographic transition of the country over the last century.

Step 1: Identify the historical classification of phases
Phase I (1901–1921) is the period of stagnant growth with high birth and death rates.
Phase II (1921–1951) is the period of steady growth where the death rate started to decline.
Phase III (1951–1981) is the period of population explosion due to a rapid fall in the death rate while the birth rate remained high.
Phase IV (Post-1981) is the period of high growth with a definite declining trend.

Step 2: Match with the question
The question specifically asks for Phase-III, which corresponds to the decades between 1951 and 1981.
This period saw the natural rate of increase peak at over 2.2% annually.

Answer 3

Concept:
• The Crude Birth Rate (CBR) is the number of live births per thousand of the population per year.

• Analyzing statistical tables requires identifying the correct column and finding the minimum value.

Step 1: Extract birth rate data from the provided table
1971 – 1981: \( 37.2 \)
1981 – 1991: \( 29.5 \)
1991 – 2001: \( 25.4 \)
2001 – 2011: \( 21.8 \)

Step 2: Identify the lowest value
By comparing the values in the "Crude Birth Rate" column, we can see a consistent downward trend from the early 1900s to 2011.
The value \( 21.8 \) recorded in the decade 2001–2011 is the lowest among all the decades listed in the source table.