The invention of the modern calendar system used globally today, the Gregorian Calendar, was introduced by which pope in 1582? MCQ with Answer and Explanation

The invention of the modern calendar system used globally today, the Gregorian Calendar, was introduced by which pope in 1582?

A. Pope Gregory VII

B. Pope Gregory XIII

C. Pope Julius II

D. Pope Urban II

Answer: Option B

Pope Gregory XIII decreed the modification of the older Julian calendar to fix errors regarding the length of the solar year.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1 Report Error

Who invented the first mechanical computer, known as the 'Difference Engine'?

A. Alan Turing

B. John von Neumann

C. Charles Babbage

D. Blaise Pascal

Correct Answer: Option C

Explanation:
Charles Babbage designed the Difference Engine and the Analytical Engine, earning him the title 'Father of the Computer'.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

The invention of the highly flexible modern structural material known as Synthetic Rubber (Buna) was developed where?

A. Russia

B. England

C. Germany by IG Farben laboratories

D. United States

Correct Answer: Option C

Explanation:
German chemists synthesized sodium-catalyzed butadiene copolymers (Buna-S and Buna-N) to secure alternative industrial resources.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

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

A. Humphry Davy

B. Joseph Black

C. Antoine Lavoisier

D. Jöns Jacob Berzelius

Correct Answer: Option A

Explanation:
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