# The most difficult units riddles

A list of units related questions that are most often answered incorrectly

Technology quiz
## What was used as a unit of mass in the classical times?

Carob seed. Carat, a unit of mass equal to 200 mg, is derived from a carob seed (Greek kerátion). People commonly believed that the seeds have unusually low variability in mass. Modern research denied this claim.

very hard

34%

carob seed

carob seed

34%

a drop of lead

a drop of lead

11%

handful of sand

handful of sand

37%

swallow's egg

swallow's egg

15%

Created by: globalquiz.org.
Statistics based on 7266 answers in 4 languages
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## What does Mbps mean?

Million bits per second. Common data rate units are multiples of bits per second (bit/s) and bytes per second (B/s). For example, the data rates of modern residential high-speed Internet connections are commonly expressed in megabits per second (Mbit/s).

hard

44%

Million bytes per second

Million bytes per second

17%

Megabytes per second

Megabytes per second

31%

Million bits per sample

Million bits per sample

6%

Million bits per second

Million bits per second

44%

Created by: Tschuka.
Statistics based on 604 answers in 3 languages
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## How much is 50 ° Fahrenheit after converting to degrees Celsius?

10 °C. The temperature T in degrees Celsius (°C) is equal to the temperature T in degrees Fahrenheit (°F) minus 32, times 5/9:

hard

45%

-10 °C

-10 °C

19%

122 °C

122 °C

20%

10 °C

10 °C

45%

2120°C

2120°C

14%

Created by: Tschuka.
Statistics based on 631 answers in 2 languages
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## How many basic units are in the SI system?

7. The SI system has seven basic units, it's a metre (length), kilogram (mass), second (time), ampere (electrical current), kelvin (temperature), candela (luminous intensity & mole (amount of substance)

hard

50%

5

5

12%

7

7

50%

9

9

21%

12

12

16%

Created by: Kuba5371.
Statistics based on 5801 answers in 3 languages
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## Which of the following is the largest?

Nautical mile equals 1852 meters (in some countries slightly different values are used), land mile (statute mile) in the U.S. is 1609 meters, verst was approx 1077 meters.

average

64%

nautical mile

nautical mile

64%

land mile in the United States

land mile in the United States

16%

old Russian verst

old Russian verst

12%

kilometer

kilometer

6%

Created by: globalquiz.org.
Statistics based on 5489 answers in 2 languages
»

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