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Q.

The scientist who discovered oxygen is _____________.

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a

Louis Pasteur 

b

Lavoisier

c

Joseph Priestly 

d

Joseph Black 

answer is A.

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Detailed Solution

Oxygen gas was discovered by the scientist Joseph Priestley in 1773. It is the most  important gas responsible for the life on earth. It is produced by plants by the process of photosynthesis but consumed by the animals by the process of respiration.

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