Tuesday, August 11, 2026
These are the 10 questions BrainRank served to the whole world on Tuesday, August 11, 2026 — now over, with every answer revealed and explained. Reading time only; the score no longer counts.
-
science
In physics, what is the standard unit of force?
- Watt
- Pascal
- Joule
- Newton
Answer: Newton
The newton (N) is the SI unit of force.
-
science
What is the chemical formula for water?
- HO2
- OH2
- H2O
- H2O2
Answer: H2O
Water is composed of two hydrogen atoms and one oxygen atom, giving the formula H2O.
-
math
What is 10% of 250?
- 25
- 2.5
- 50
- 20
Answer: 25
10% of 250 = 0.10 × 250 = 25.
-
history
The Pyramids of Giza were built primarily as what type of structure?
- Temples for worship
- Storehouses for grain
- Fortresses for defense
- Tombs for pharaohs
Answer: Tombs for pharaohs
The Pyramids of Giza were built as tombs for Egyptian pharaohs.
-
science
Which chemical symbol represents lead?
- Le
- Ld
- Pb
- Pd
Answer: Pb
Pb (from Latin 'plumbum') is the chemical symbol for lead.
-
geography
Which continent is the coldest and contains the South Pole?
- Antarctica
- South America
- Australia
- Asia
Answer: Antarctica
Antarctica is the coldest continent and contains the South Pole.
-
language
Which part of speech expresses an action or state of being?
- Noun
- Pronoun
- Conjunction
- Verb
Answer: Verb
A verb expresses action or a state of being.
-
math
What is 15% of 200?
- 30
- 15
- 45
- 20
Answer: 30
15% of 200 = 0.15 × 200 = 30.
-
math
What number comes next: 2, 3, 5, 8, 12, ...?
- 15
- 16
- 17
- 18
Answer: 17
Differences grow by 1 (+1,+2,+3,+4,+5): 12 + 5 = 17.
-
science
What is the SI unit of electric current?
- Ampere
- Volt
- Ohm
- Watt
Answer: Ampere
The ampere (A) is the SI base unit of electric current.