A Fascinating Quiz on Why Are Doorknobs Made of Brass?

Ashley | 04 - 03 - 2021
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Questions 1 - 10

Brass Disinfect Itself Depending on “Oligodynamic Effect”

Questions 2 - 10

Doorknobs Were First Made in France.

Questions 3 - 10

Steel Doorknobs Disinfect Themselves.

Questions 4 - 10

What Are the Basic Components of Doorknobs?

Questions 5 - 10

Door Knobs Were First Introduced in the USA in the 15th Century.

Questions 6 - 10

When Were Doorknobs Patented by Osbourn Dorsey?

Questions 7 - 10

‘Oligodynamic Effect’ Has a Toxic Effect on Living Cells.

Questions 8 - 10

The Average Size of a Doorknob Is 5.715 cm.

Questions 9 - 10

Wooden Knobs Were Introduced in the Late 1800s.

Questions 10 - 10

Cast Medal Knobs Were Introduced Only in 1746.