Daily Trivia Quiz - Day 89 (2026-01-07)

Question 1

Do human beings emit light (bioluminescence)?

Accepted Answer

Yes, but it's too faint for our eyes to see

Question 2

Do brown eggs differ nutritionally from white eggs?

Accepted Answer

No, shell color just reflects the hen’s breed

Question 3

Why do modern pianos have 88 keys?

Accepted Answer

Builders expanded range to match orchestras, settling at 88 by the 1880s

Question 4

Why can LED traffic lights sometimes get covered by snow?

Accepted Answer

They emit so little heat that falling snow doesn’t melt off

Question 5

What is the tiny fabric swatch sometimes attached to new clothes really for?

Accepted Answer

Testing how the material reacts to washing or cleaners

Question 6

Why do sloths often appear green in the wild?

Accepted Answer

Algae grow in their fur

Question 7

Why are denim jeans traditionally blue?

Accepted Answer

Indigo dye hides dirt and stains well

Question 8

What was the original reason for putting mirrors in elevators?

Accepted Answer

To distract people from the slow speed

Question 9

What color is liquid oxygen?

Accepted Answer

Pale blue

Question 10

Which large country has no permanent rivers?

Accepted Answer

Saudi Arabia