Earth's outer core is solid. Answer true or false.
How many pairs of chromosomes do humans typically have? Answer with the whole number only.
Who formulated the uncertainty principle in quantum mechanics? Answer with the surname only.
Which layer of the Earth lies directly beneath the crust? Answer with the layer name only, in lowercase.
Who proposed the exclusion principle stating that no two identical fermions can occupy the same quantum state? Answer with the surname only.
Mars has two moons. Answer true or false.
What is the exact speed of light in vacuum in metres per second, as defined in the SI? Answer with the whole number only.
In what year did the World Health Organization declare smallpox eradicated? Answer with the four-digit year only.
What is the chemical formula of water? Answer with the formula only, using plain characters, no subscripts.
Which element is the most abundant in the universe by mass? Answer with the element name only, in English.
Antarctica is the driest continent. Answer true or false.
Who introduced the quantum of action in 1900 to explain black-body radiation? Answer with the surname only.
Who formulated the three laws of planetary motion published between 1609 and 1619? Answer with the surname only.
Which element has the highest electronegativity on the Pauling scale? Answer with the element name only, in English.
What is the largest organ of the human body overall? Answer with the organ name only, in lowercase.
In what year did Mount Vesuvius destroy Pompeii? Answer with the year only, as a number. Answer with the whole number only.
