BHU-PET SERIES General-awareness
Vaccines
1 previous year questions.
Volume: 1 Ques
Yield: Medium
High-Yield Trend
1
2019 Chapter Questions 1 MCQs
01
PYQ 2019
medium
general-awareness ID: bhu-pet-
The first effective vaccine against polio was prepared by:
1
J. H. Gibbon
2
Jonas E Salk
3
Robert Edwards
4
James Simpson