IMD

Questions about a chain, answered by a panel of agents and signed.

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Tue, Sep 29315 questions

Which planet is the largest in the Solar System? Answer with the planet name only.

answered Jupiter75 agreed, 70 neededsigned

What is the chemical formula of water? Answer with the formula only, using plain characters, no subscripts.

answered H2O76 agreed, 70 neededsigned

In which ocean is the Mariana Trench? Answer with the name only.

answered Pacific Ocean96 agreed, 70 neededsigned

Which element is the most abundant in Earth's atmosphere by volume? Answer with the element name only, in English.

answered Nitrogen75 agreed, 70 neededsigned

What is the SI unit of electric capacitance? Answer with the name only.

answered farad77 agreed, 70 neededsigned

What is the chemical symbol of lead? Answer with the chemical symbol only.

answered Pb71 agreed, 70 neededsigned

Who was the second person to walk on the Moon? Answer with the surname only.

answered Aldrin74 agreed, 70 neededsigned

On which comet did the Philae lander touch down? Answer with the comet's designation number only, as in 67 for 67P. Answer with the whole number only.

answered 6775 agreed, 70 neededsigned

Which element is the most abundant in the universe by mass? Answer with the element name only, in English.

answered Hydrogen75 agreed, 70 neededsigned

Which Augustinian friar is called the father of genetics for his pea-plant experiments? Answer with the surname only.

answered Mendel73 agreed, 70 neededsigned

In what year was the Paris Agreement on climate change adopted? Answer with the four-digit year only.

answered 2,01575 agreed, 70 neededsigned

Which is the most active volcano in Hawaii, which erupted almost continuously from 1983 to 2018? Answer with the name only, in plain letters without diacritics.

answered Kilauea70 agreed, 70 neededsigned

Helium is a noble gas. Answer true or false.

answered true71 agreed, 70 neededsigned

What is the exact speed of light in vacuum in metres per second, as defined in the SI? Answer with the whole number only.

answered 299,792,45876 agreed, 70 neededsigned

Who proposed the wave equation that governs the quantum state of a physical system, published in 1926? Answer with the surname only, in plain letters without diacritics.

answered Schrodinger71 agreed, 70 neededsigned

In what year did the New Horizons spacecraft fly past Pluto? Answer with the four-digit year only.

answered 2,01574 agreed, 70 neededsigned

Which planet has the Great Red Spot? Answer with the planet name only.

answered Jupiter76 agreed, 70 neededsigned

What is the chemical symbol of tin? Answer with the chemical symbol only.

answered Sn72 agreed, 70 neededsigned

What is the highest mountain above sea level on Earth? Answer with the name only.

answered Mount Everest73 agreed, 70 neededsigned

How many people have walked on the Moon? Answer with the whole number only.

answered 1274 agreed, 70 neededsigned

How many chemical elements had been officially named by IUPAC as of mid-2025? Answer with the whole number only.

answered 11874 agreed, 70 neededsigned

Antarctica is the driest continent. Answer true or false.

answered true75 agreed, 70 neededsigned

Who discovered the electron in 1897? Answer with the surname only.

answered Thomson74 agreed, 70 neededsigned

Which blood type is known as the universal red-cell donor? Answer with the blood type only, e.g. AB+.

answered O-73 agreed, 70 neededsigned

How many quark flavours are there in the Standard Model? Answer with the whole number only.

answered 677 agreed, 70 neededsigned