Assertion & Reason Type Questions: Population

Direction: In the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and choose the correct option:

Q1: Assertion (A): The Northern Plains of India have high to very high population densities.
Reason (R): The terrain of the Northern Plains is rugged and hilly, making it ideal for settlement.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (c) 
The Northern Plains are flat, fertile, and have abundant water-ideal for human settlement. However, the reason states that the terrain is "rugged and hilly," which is incorrect for the plains. So, A is true, R is false.

Q2: Assertion (A): India's population has steadily increased from 361 million in 1951 to over 1210 million in 2011.
Reason (R): India saw high birth rates and gradually declining death rates until 1980.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (a) 
Both statements are correct. The declining death rates (due to medical improvements) and high birth rates caused a sharp rise in population.

Q3: Assertion (A): Internal migration changes the overall population size of India.
Reason (R): Migration includes the movement of people within the country.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (c)
Internal migration does not change the overall population size of the country-it only redistributes it. So A is false, but R is correct.

Q4: Assertion (A): Adolescents constitute a significant portion of India's population.
Reason (R): Adolescents fall in the age group of 10 to 19 years.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (a)
Adolescents form about one-fifth of India's population. Since this age group is defined as 10-19 years, R correctly explains A.

Q5: Assertion (A): The National Population Policy 2000 aimed to promote early marriage and large families.
Reason (R): It focused on improving reproductive health and achieving population stabilization.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (d)
NPP 2000 actually promotes delayed marriage and smaller families. However, it indeed focuses on reproductive health and stabilization-so A is false, R is true.

Q6: Assertion (A): Urban areas in India are witnessing rapid growth due to migration.
Reason (R): Rural areas push people due to poverty and lack of employment while urban areas pull them with better opportunities.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (a)
This push-pull factor directly contributes to increasing urban population. So both A and R are true and R explains A.

Q7: Assertion (A): Bihar has the lowest population density in India.
Reason (R): Population density is calculated as persons per square kilometer.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (d)
Bihar actually has the highest population density (1102 per sq km in 2011). But the method to calculate population density (R) is correct.

Q8: Assertion (A): The rate of population growth in India has been declining since 1981.
Reason (R): Birth rates have started to fall gradually due to better awareness and healthcare.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (a)
India's growth rate has declined due to falling birth rates post-1981, largely because of better healthcare and family planning initiatives.

Q9: Assertion (A): High birth rates and declining death rates led to population explosion in India till 1980.
Reason (R): Death rates declined due to improvements in healthcare and sanitation.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (a)
Falling death rates without a corresponding drop in birth rates widened the gap, causing population explosion. So, both are true and R explains A.

Q10: Assertion (A): Population growth refers to the absolute number of people added each year.
Reason (R): Population change includes births, deaths, and migration.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
Ans: (b)
Population growth refers specifically to the increase in population, usually measured in absolute numbers or rate. Population change includes all components of demographic shifts-not just growth-so R is true but does not explain A.