11th Grade Trivia
0Loading crowd target
0Loading crowd target
6correct to beat the crowd
50 free 11th Grade trivia questions with answers — trivia quiz, new questions added Aug 2026.
Eleventh grade is where school science stops being a list of facts and starts being a set of tools: a threshold frequency, a bond angle, a ratio in a Punnett square. It is also the year of the big names, the physicists who argued over what light is, the chemist who dreamed up a ring, the naturalist who gave every species two Latin words, and of a syllabus that runs from quantum numbers to the Haber process in a single term. These 50 questions follow a class 11 and 12 syllabus rather than a pub-quiz grab bag. Physics, chemistry and biology carry the biggest share; then calculus, probability and sequences, modern world history, the physical geography of the atmosphere and oceans, and the novels and plays read in junior English. Each answer comes with a one-line explanation that adds something the textbook left out. Play it to see whether you would still pass, hand it to a student as a revision round, or print it for a classroom quiz.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Einstein's 1921 Nobel Prize in Physics especially cited his discovery of the law of which effect?
Photoelectric effect
The photoelectric effect, not relativity, is what Einstein's Nobel citation names, and Millikan won the 1923 Nobel partly for his work on it.
Q 02How many prisoners were inside the Bastille when Parisians stormed it in July 1789?
Seven
Seven inmates were all the Bastille held, and Lafayette later sent the fortress's main key to George Washington, whose Mount Vernon home still displays it.
Q 03Whose DNA research produced Photo 51, the X-ray image Maurice Wilkins showed James Watson before the double-helix paper?
Rosalind Franklin
Rosalind Franklin captured Photo 51 with her PhD student Raymond Gosling, but she died in 1958, four years before Watson, Crick and Wilkins won the Nobel.
Q 04Which polymer was discovered by accident at DuPont in 1938, when a gas cylinder turned out to hold a white solid?
Teflon
Teflon's first job was in the Manhattan Project, coating valves and seals against corrosive uranium hexafluoride, years before non-stick pans.
Q 05Which blood type is the universal red-cell donor, the one reached for in an emergency before the patient has been typed?
O negative
O negative is the universal red-cell donor, but plasma rules run in reverse, so type AB is the universal plasma donor.
Q 06Which phenomenon, exploited by police speed radar, makes a passing siren slide from above its true pitch to below it?
Doppler effect
The Doppler effect was proposed in 1842 to explain the coloured light of binary stars, and in 1845 musicians playing on a moving train were used to test it.
Q 07What Celsius temperature is absolute zero, where an ideal gas's pressure and volume both extrapolate to nothing?
−273.15 °C
−273.15 °C is where classical physics said all motion stops, yet quantum theory says atoms still keep a jiggle called zero-point motion there.
Q 08Which phenomenon of Earth's rotation deflects air to the right in the Northern Hemisphere and spins up hurricanes?
Coriolis effect
The Coriolis effect is far too weak to steer a household sink or bathtub, where leftover motion in the water decides which way it swirls.
Q 09Which 1953 Arthur Miller play about the Salem witch trials was written as an allegory for McCarthyism?
The Crucible
The Crucible's author was later found guilty of contempt of Congress himself, after refusing to give the House Un-American Activities Committee others' names.
Q 10Which 1919 peace settlement's Article 231, the 'war guilt clause', made Germany accept blame for World War I?
Treaty of Versailles
Germany was barred from the Paris talks that wrote the Treaty of Versailles and took no part in negotiating its terms before signing.
Q 11Which noble gas did Neil Bartlett force into the first noble-gas compound in 1962, using platinum hexafluoride?
Xenon
Xenon was long filed among the 'inert' gases, yet since Bartlett's result chemists have made dozens of xenon compounds.
Q 12Which element is so reactive that it combines with every other element except the lightest noble gases?
Fluorine
Fluorine was first isolated in 1886 by Henri Moissan, who chilled his apparatus to slow the gas's attack on it, and the feat won him the 1906 Nobel Prize.
Q 13Which compound, until then known only from living bodies, did Friedrich Wöhler make from ammonium cyanate in 1828?
Urea
Urea from a flask let Wöhler boast to Berzelius that he could now make it without needing a kidney, whether of man or dog.
Q 21Which enzyme, probably the most abundant on Earth, fixes carbon dioxide in the Calvin cycle of photosynthesis?
RuBisCO
RuBisCO is so slow, fixing only a few carbon dioxide molecules a second, that plants make up for it by packing their chloroplasts with the enzyme.
Q 22Which stage of cellular respiration takes place in the cytosol and needs no oxygen?
Glycolysis
Glycolysis may be older than life itself, since reactions resembling it can run without enzymes in iron-rich, oxygen-free water like the early oceans.
Q 23What phenotype ratio appears in the F2 generation when Mendel crossed two pea plants heterozygous for two traits?
9:3:3:1
9:3:3:1 breaks down as 9 showing both dominant traits, 3 and 3 with one each, and 1 in 16 recessive for both, but only if the two genes assort independently.
Q 14Which German chemist said a daydream of a snake seizing its own tail led him to the ring structure of benzene?
August Kekulé
August Kekulé entered university meaning to study architecture, but Justus von Liebig's lectures in his first semester turned him to chemistry.
Q 15Which French chemist's 1884 principle predicts that raising the pressure in the Haber process yields more ammonia?
Henry Le Chatelier
Henry Le Chatelier also studied the combustion of acetylene with oxygen, work that led to the oxyacetylene torch used in welding.
Q 16Which Austrian physicist's exclusion principle says no two electrons in an atom can share all four quantum numbers?
Wolfgang Pauli
Wolfgang Pauli also proposed the neutrino, an uncharged particle he said must carry off the energy that seemed to vanish in radioactive beta decay.
Q 17Which hydrogen isotope forms the heavy water that moderates some nuclear reactors?
Deuterium
Deuterium was found in 1931 by distilling liquid hydrogen until the heavier atoms were concentrated, a discovery that won the 1934 Nobel Prize in Chemistry.
Q 18According to VSEPR theory, what is the shape of a methane molecule?
Tetrahedral
Tetrahedral spacing puts methane's bonds 109.5° apart, the arrangement that keeps its four electron pairs as far from each other as possible.
Q 19How many particles make one mole, a constant named after the Italian who tied a gas's volume to its molecule count?
6.022 × 10²³
6.022 × 10²³ was measured from the atom spacing in ultra-pure silicon spheres, and in 2019 the mole was redefined as exactly that many entities.
Q 20Which British polymath demonstrated light's wave nature by interference and also helped decipher the Rosetta Stone?
Thomas Young
Thomas Young's wave evidence drew criticism at first, because it contradicted Isaac Newton's particle theory of light.
Q 24Which pancreatic hormone raises blood sugar by signalling the liver to release its stored sugar?
Glucagon
Glucagon is kept as an emergency shot that a friend or family member can inject when someone's blood sugar is so low they cannot take food by mouth.
Q 25Which layer, laid down by Schwann cells around peripheral axons, lets nerve signals jump between the nodes of Ranvier?
Myelin
Myelin in the brain and spinal cord is what the immune system attacks in multiple sclerosis, slowing or blocking messages between the brain and the body.
Q 26Which naturalist's 1753 Species Plantarum began modern botanical naming, with two Latin words per species?
Carl Linnaeus
Carl Linnaeus at first classed whales among the fishes, then moved them into the mammals in the 1758 edition of his Systema Naturae.
Q 27Which heat-stable enzyme, from a Yellowstone hot-spring bacterium, lets PCR run at high temperature unharmed?
Taq polymerase
Taq polymerase made PCR practical, because earlier enzymes were destroyed by the heating step and had to be added fresh for every round.
Q 28Which plant hormone do commercial fruit-ripening rooms release as a gas to ripen fruit?
Ethylene
Ethylene leaking from old gas street lamps made nearby trees shed their leaves earlier than expected.
Q 29What escape velocity must an unpowered projectile reach at Earth's surface, ignoring air resistance, to never fall back?
11.2 km/s
11.2 km/s is easier to reach launching eastward near the equator, where Earth's spin adds about 460 m/s, one reason many launch sites sit close to it.
Q 30Kepler's third law ties the square of a planet's orbital period to which power of its orbit's semi-major axis?
Cube
The cube rule came to Kepler in 1618, and he worked it into his book The Harmony of the World at the last minute.