Tuesday, August 25, 2026

These are the 10 questions BrainRank served to the whole world on Tuesday, August 25, 2026 — now over, with every answer revealed and explained. Reading time only; the score no longer counts.

1. nature

   Which is the largest living primate?

   • Chimpanzee
   • Baboon
   • Gorilla
   • Orangutan

   Answer: Gorilla

   The gorilla is the largest living primate.

2. science

   At sea level, at what temperature does pure water boil?

   • 50 degrees Celsius
   • 90 degrees Celsius
   • 212 degrees Celsius
   • 100 degrees Celsius

   Answer: 100 degrees Celsius

   Water boils at 100 degrees Celsius at sea-level atmospheric pressure.

3. mythology

   In Norse mythology, what is the name of the great hall where warriors slain in battle feast?

   • Valhalla
   • Utgard
   • Helheim
   • Midgard

   Answer: Valhalla

   Valhalla is Odin's hall, where warriors who fall in battle are received and feast.

4. geography

   What is the capital of Russia?

   • Saint Petersburg
   • Kazan
   • Moscow
   • Novosibirsk

   Answer: Moscow

   Moscow is the capital of Russia.

5. everyday-science

   What is the process by which plants lose water vapor mainly through their leaves?

   • Respiration
   • Transpiration
   • Digestion
   • Germination

   Answer: Transpiration

   Transpiration is the loss of water vapor from plant leaves.

6. science

   How many planets are there in our solar system?

   • 7
   • 8
   • 9
   • 10

   Answer: 8

   Since 2006 the solar system is defined as having 8 planets (Pluto is a dwarf planet).

7. science

   Which is the lightest chemical element?

   • Hydrogen
   • Helium
   • Oxygen
   • Carbon

   Answer: Hydrogen

   Hydrogen has atomic number 1 and is the lightest element.

8. geography

   What is the capital of Brazil?

   • Rio de Janeiro
   • São Paulo
   • Salvador
   • Brasília

   Answer: Brasília

   Brasília is the capital of Brazil (not Rio de Janeiro).

9. language

   The Greek root 'phon' relates to which of these?

   • Light
   • Shape
   • Sound
   • Water

   Answer: Sound

   'Phon' relates to sound, as in 'telephone' and 'phonics'.

10. geography

    What is the capital of Canada?

    • Toronto
    • Ottawa
    • Vancouver
    • Montreal

    Answer: Ottawa

    Ottawa is the capital of Canada (not Toronto).