The structure of benzene ring ($C_6H_6$) was discovered by which chemist? MCQ with Answer and Explanation

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The structure of benzene ring ($C_6H_6$) was discovered by which chemist?

A. Antoine Lavoisier

B. Dmitri Mendeleev

C. Friedrich August Kekulé

D. Robert Boyle

Answer: Option C

Solution (By JKSSB Mock Tests)

Friedrich August Kekulé discovered the ring structure of benzene after famously having a daydream of a snake biting its own tail.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The first practical mechanical sewing machine was patented by whom in 1846?

A. Isaac Singer

B. Eli Whitney

C. Elias Howe

D. Walter Hunt

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Correct Answer: Option C

Explanation:
Elias Howe patented the first practical lockstitch sewing machine in the United States in 1846.

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Who discovered that the element Beryllium is isolated from emerald and beryl crystal ores?

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Correct Answer: Option B

Explanation:
Vauquelin discovered beryllium oxide in 1798 after chemical analysis of distinct mineral beryl matrix samples.

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Question #3

Who discovered that the velocity of chemical reaction pathways balances linearly under specific concentration ratios, establishing the Law of Mass Action?

A. Cato Maximilian Guldberg and Peter Waage

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Correct Answer: Option A

Explanation:
Norwegian scientists Guldberg and Waage formulated the mathematical chemical equilibrium rate laws in 1864.

This question belongs to: Static General Knowledge Inventions and Discoveries

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