Telephone was invented by__________?

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Insulin drug was discovered by____________?

A. Charles Herbert Best B. Prof John James Rickard Macleod C. Sir Frederick Grant Banting D. Leonard Thompson...

The season changes because of the ____________?

A. Moon is revolving round the earth B. Earth is revolving round its axis C. Earth is revolving round the sun D. Planet Mars is attracting the sun...

Who invented “Aspirin” in 1897?

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Which Planet is Called Great Red Spot?

A. Neptune B. Mars C. Jupiter D. Mercury...

A bird that can fly backwards?

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