Solution:Infant mortality rate is the probability of dying between birth and exactly 1 year of age, expressed per 1000 (not 10000) live births. Hence, statement 1 is incorrect.The infant mortality rate in India (as per the World Bank data) in the year 1950 was 189.6. Hence, statement 2 is correct. BPSC has also accepted this statement correct in its final answer key. However, as per the data of Central Bureau of Health Intelligence, Government of India, average infant mortality rate during the period 1946-1950 was 134, while it was at 146 during the period 1951-1961.
As per the Sample Registration System (SRS) Bulletins, the infant mortality rate in India was 30 in 2019, while it was at 28 in 2020. Hence, statement 3 is correct. As per the SRS bulletins, the State with the highest infant mortality rate in 2019 was Madhya Pradesh (46), while in 2020 it was again highest in Madhya Pradesh (43). Hence, statement 4 is incorrect.