મુખ્ય સામગ્રી પર જાઓ

State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · પ્રશ્ન 112

Which scientist/physician first introduced vaccination?

Robert Koch
Élie Metchnikoff
Edward Jenner
Joseph Lister
None of the above / More than one of the above

જવાબ બતાવો અને સમજૂતી

જવાબ: (C) Edward Jenner

સમજૂતી

Edward Jenner used cowpox to protect against smallpox, founding vaccination.

(A) ખોટો
Wrong: discovered TB and cholera bacteria.
(B) ખોટો
Wrong: discovered phagocytosis.
(C) સાચો
Correct: Jenner developed the smallpox vaccine (1796).
(D) ખોટો
Wrong: pioneered antiseptic surgery.
(E) ખોટો
Wrong: only one of the options A–D is correct.