Trivia

Hard

Naturally Occurring Rubber Is What Color?

Pink
Black
Green
White
Latex that is being collected from a rubber tree.
Mohd Hafiz Noor Shams/ Wikimedia

Answer: White

Natural rubber is created from latex fluids harvested from rubber trees and other plant species in various regions around the world. Latex is a milky colloidal fluid that, in its pure form, dries to form a white natural rubber—the pale color of latex gloves long used in the medical profession reflect this and early automobile tires were also a white tone in color.

Why, then, are so many rubber products today dark? Why are rubber stoppers, rubber feet on electronics, and rubber tires all charcoal black? While natural rubber is great for things like water resistance, it isn’t particularly durable. In fact, its default flexibility is actually a hindrance in applications, like tires, where durability is more important than extreme flexibility. In such cases, the rubber is vulcanized, a chemical process wherein the rubber is heated and sulfur, peroxide, or bisphenol is added to harden the rubber and increase its durability (carbon black was often used before World War II).

Trivia

Hard

Nevermind, A Psychological Horror Video Game, Uses What Technique To Increase Game Difficulty?

Trivia

Hard

The Last Version of Windows To Use FAT As The Default File System Was?

Trivia

Hard

Which Cereal Company Had A Brief Stint As A Video Game Development House?

Trivia

Easy

Which Disney Park Was Originally Intended To Be A Populated Community?

Trivia

Hard

The Oldest Continuously Seeded Torrent File Is?

Trivia

Easy

Which Fruit Contains The Most Fat Per Unit Of Fruit?

Trivia

Easy

The Most Common Source Of “Hay Fever” Is?

Trivia

Very Hard

Braille, The Tactile Writing System For The Blind, Is Derived From What?

Trivia

Easy

In 1922, Phone Lines In The U.S. Were Silenced To Observe What?

Trivia

Hard

During World War II, The U.S. Military Turned Which Of These Animals Into Self-Guided Explosive Devices?