Who invented the escalator? MCQ with Answer and Explanation

Who invented the escalator?

A. George Otis

B. Elisha Otis

C. Charles Seeberger

D. Jesse Reno

Answer: Option D

Jesse Reno patented the first escalator.

This question belongs to: Static General Knowledge First in the World

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Question #1 Report Error

Who was the first person to observe the phases of Venus?

A. Johannes Kepler

B. Nicolaus Copernicus

C. Tycho Brahe

D. Galileo Galilei

Correct Answer: Option D

Explanation:
Galileo Galilei was the first to observe the phases of Venus, providing evidence for the heliocentric model.

This question belongs to: Static General Knowledge First in the World

Question #2 Report Error

Who was the first person to develop a commercial transistor?

A. Jack Kilby

B. Robert Noyce

C. Bardeen, Brattain, and Shockley

D. Gordon Moore

Correct Answer: Option C

Explanation:
They invented the transistor at Bell Labs in 1947.

This question belongs to: Static General Knowledge First in the World

Question #3 Report Error

Who invented the saxophone?

A. Louis Armstrong

B. Charlie Parker

C. Adolphe Sax

D. John Coltrane

Correct Answer: Option C

Explanation:
Adolphe Sax invented the saxophone.

This question belongs to: Static General Knowledge First in the World