The first practical automatic dishwasher was invented and patented by which female innovator in 1886? MCQ with Answer and Explanation

The first practical automatic dishwasher was invented and patented by which female innovator in 1886?

A. Mary Anderson

B. Stephanie Kwolek

C. Josephine Cochrane

D. Grace Hopper

Answer: Option C

Josephine Cochrane designed the first successful hand-powered mechanical dishwasher because she wanted to protect her fine china from chipping.

This question belongs to: Static General Knowledge Inventions and Discoveries

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

Question #1 Report Error

The blood group system (A, B, O) was discovered by which scientist?

A. Karl Landsteiner

B. Robert Koch

C. William Harvey

D. Edward Jenner

Correct Answer: Option A

Explanation:
Karl Landsteiner discovered the ABO blood groups in 1900, for which he received the Nobel Prize in Physiology or Medicine in 1930.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

The invention of the common matchstick containing phosphorus triggered by friction was developed by whom?

A. Robert Boyle

B. Humphry Davy

C. Antoine Lavoisier

D. John Walker

Correct Answer: Option D

Explanation:
English chemist John Walker invented the first friction match in 1826 by coating cardboard or wooden splints with sulfide pastes.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

The barometers, used to measure atmospheric pressure, was invented by whom?

A. Robert Boyle

B. Evangelista Torricelli

C. Otto von Guericke

D. Blaise Pascal

Correct Answer: Option B

Explanation:
Evangelista Torricelli, an Italian physicist, invented the mercury barometer in 1643.

This question belongs to: Static General Knowledge Inventions and Discoveries