Thursday, August 20, 2026

These are the 10 questions BrainRank served to the whole world on Thursday, August 20, 2026 — now over, with every answer revealed and explained. Reading time only; the score no longer counts.

1. nature

   Which pigment gives most plant leaves their green colour?

   • Keratin
   • Melanin
   • Chlorophyll
   • Hemoglobin

   Answer: Chlorophyll

   Chlorophyll is the green pigment used in photosynthesis.

2. nature

   Reptiles such as snakes and lizards are best described as which of these?

   • Warm-blooded
   • Cold-blooded
   • Feathered
   • Fur-covered

   Answer: Cold-blooded

   Reptiles are ectothermic, commonly called cold-blooded.

3. nature

   Which gas do plants release into the air during photosynthesis?

   • Carbon dioxide
   • Oxygen
   • Nitrogen
   • Methane

   Answer: Oxygen

   Photosynthesis produces oxygen as a by-product.

4. math

   What do the interior angles of a triangle add up to?

   • 90 degrees
   • 180 degrees
   • 270 degrees
   • 360 degrees

   Answer: 180 degrees

   A triangle's interior angles sum to 180 degrees.

5. geography

   What is the capital of Japan?

   • Tokyo
   • Osaka
   • Kyoto
   • Yokohama

   Answer: Tokyo

   Tokyo is the capital of Japan.

6. nature

   Which ability are starfish well known for?

   • Changing colour to speak
   • Flying short distances
   • Regrowing lost arms
   • Breathing through gills on land

   Answer: Regrowing lost arms

   Starfish can regenerate lost arms.

7. arts

   What is the term for a dramatic work dealing with serious themes and often ending unhappily?

   • Comedy
   • Tragedy
   • Farce
   • Musical

   Answer: Tragedy

   A tragedy is a serious drama that typically ends unhappily.

8. nature

   What is a young frog, which lives in water, called?

   • Kitten
   • Larva
   • Tadpole
   • Nymph

   Answer: Tadpole

   A larval frog is called a tadpole.

9. language

   Which word is the closest synonym of 'enormous'?

   • Gigantic
   • Tiny
   • Average
   • Narrow

   Answer: Gigantic

   'Gigantic' means very large, matching 'enormous'.

10. language

    What is the traditional collective noun for a group of fish swimming together?

    • Flock
    • Swarm
    • Herd
    • School

    Answer: School

    A group of fish is called a 'school' (or shoal).