Who discovered that the chemical element Calcium is isolated via electrolysis of lime and mercuric oxide mixtures? MCQ with Answer and Explanation

Question

Share Report Error

Who discovered that the chemical element Calcium is isolated via electrolysis of lime and mercuric oxide mixtures?

A. Jöns Jacob Berzelius

B. Joseph Black

C. Antoine Lavoisier

D. Humphry Davy

Answer: Option D

Solution (By JKSSB Mock Tests)

Sir Humphry Davy isolated elemental calcium metal in 1808 using a mercury-cell electrolysis setup.

This question belongs to: Static General Knowledge Inventions and Discoveries

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Inventions and Discoveries Questions

Question #1

Share Report

The invention of the common chemical processing method known as the Ostwald Process optimized production of what?

A. Phosphoric Acid

B. Nitric Acid

C. Ammonia

D. Sulfuric Acid

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option B

Explanation:
Wilhelm Ostwald patented the catalytic oxidation of ammonia over platinum mesh sheets in 1902, securing key munitions chemicals.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

Share Report

The invention of the mechanical calculating machine named 'Pascaline' in 1642 was completed by whom?

A. Gottfried Wilhelm Leibniz

B. Blaise Pascal

C. René Descartes

D. Charles Babbage

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option B

Explanation:
Blaise Pascal invented the Pascaline to assist his father, a tax commissioner, in performing arithmetic addition and subtraction.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

Share Report

Who discovered the planet Neptune using mathematical calculations before it was verified by telescope?

A. William Herschel

B. Johannes Kepler

C. Galileo Galilei

D. Urbain Le Verrier and John Couch Adams

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option D

Explanation:
Urbain Le Verrier and John Couch Adams independently calculated the location of Neptune based on irregularities in Uranus's orbit.

This question belongs to: Static General Knowledge Inventions and Discoveries

Explore All Inventions and Discoveries MCQs