Who discovered that malaria parasites mature within the gastrointestinal tract of Anopheles mosquitoes, winning a Nobel Prize in 1902? MCQ with Answer and Explanation

Question

Who discovered that malaria parasites mature within the gastrointestinal tract of Anopheles mosquitoes, winning a Nobel Prize in 1902?

A. Louis Pasteur

B. Sir Ronald Ross

C. Charles Laveran

D. Robert Koch

Answer: Option B

Solution (By JKSSB Mock Tests)

Sir Ronald Ross proved the vector transmission cycle of malaria while working in Secunderabad, India.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who developed the first successful polio vaccine in 1955?

A. Albert Sabin

B. Jonas Salk

C. Louis Pasteur

D. Edward Jenner

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Correct Answer: Option B

Explanation:
Jonas Salk developed the first successful inactivated polio vaccine (IPV) in 1955, while Albert Sabin later developed the oral polio vaccine.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered that the velocity of light transitions through changing gravitational coordinates, establishing the gravitational redshift?

A. Albert Einstein

B. Arthur Eddington

C. Edwin Hubble

D. Isaac Newton

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Correct Answer: Option A

Explanation:
Einstein's General Theory of Relativity predicted that photons lose energy and shift toward lower frequencies when climbing out of a gravitational well.

This question belongs to: Static General Knowledge Inventions and Discoveries