The hierarchy of research designs with respect to hypothesis testing and cause-effect relationships starts with the least structured and progresses to the most rigorous:
Match List I with List II:
List I (Indicator) | List II (Denominator) |
---|---|
A. Specific death rate due to tuberculosis | I. Total number of COVID-19 cases |
B. Specific death rate for males | II. Mid-year population |
C. Case fatality rate for COVID-19 | III. Mid-year population of males |
D. Specific death rate in age group 15-19 years | IV. Mid-year population of persons aged 15-19 |
Choose the correct answer from the options given below:
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: