Question : ------------------------refers to the number of birth during a given period in the population that are added to the initial density.

Option 1: Natality

Option 2: Mortality

Option 3: Immigration

Option 4: Emigration

Question : The birth rate measures the number of birth during a year per

Option 1: 100 population

Option 2: 1000 population

Option 3: 10000 population

Option 4: 100000 population

Question : The population of the city is 20,000. It increases by 20% during the first year and 30% during the second year. The population after two years will be:

Option 1: 32,000

Option 2: 40,000

Option 3: 31,200

Option 4: 30,000

Question : 20% of the inhabitants of a village had died of malaria, a panic set in, during which 30% of the remaining inhabitants left the village. The population was then reduced to 12,000. What was the number of inhabitants initially (Consider integral part only)

Option 1: 21000

Option 2: 21428

Option 3: 21500

Option 4: 30428

Question : Which of the following periods is known as the period of population explosion in India?

Option 1: 1981-2021

Option 2: 1931-1961

Option 3: 1921-1951

Option 4: 1951-1981