Q13. | Ortho-toulidine test is done to measure |
Q14. | Horrock's apparatus is used to estimate |
Q15. | Disinfecting action of chlorine in water is due to |
Q16. | Perinatal mortality rate includes |
Q17. | In India the most common cause of IMR is |
Q18. | Which is the most common permanent method of contraception practiced in India |