Science Multiple Choice Quiz 1 NewMedium
30 questions about 40 minutes 14/11/2026
1. Which metal has the highest melting point?A TungstenB OsmiumC RheniumD Tantalum
2. Which part of a cell is the site of protein synthesis?A Golgi apparatusB LysosomeC RibosomeD Peroxisome
3. Which planet takes the longest to rotate once on its axis?A MercuryB MarsC NeptuneD Venus
4. What is the SI unit of electrical capacitance?A HenryB FaradC SiemensD Weber
5. A lack of which vitamin causes the disease beriberi?A Vitamin B1 (thiamine)B Vitamin B3 (niacin)C Vitamin B12D Vitamin D
6. Which scientist discovered the electron in 1897?A Ernest RutherfordB James ChadwickC J.J. ThomsonD Niels Bohr
7. Which is the most abundant element in the Earth's crust by mass?A SiliconB AluminiumC IronD Oxygen
8. Which of these particles is a lepton?A MuonB PionC NeutronD Kaon
9. Which blood vessel carries oxygen-rich blood from the lungs to the heart?A Pulmonary arteryB AortaC Vena cavaD Pulmonary vein
10. Which gas makes up about 95% of the atmosphere of Mars?A NitrogenB Carbon dioxideC MethaneD Argon
11. Which acid is used in a standard lead-acid car battery?A Hydrochloric acidB Nitric acidC Sulfuric acidD Phosphoric acid
12. Which of these minerals is the hardest on the Mohs scale?A CorundumB TopazC QuartzD Orthoclase feldspar
13. Roughly how long does light from the Sun take to reach the Earth?A About 1 minuteB About 8 minutesC About 20 minutesD About 1 hour
14. Which physicist formulated the uncertainty principle in 1927?A Erwin SchrödingerB Wolfgang PauliC Paul DiracD Werner Heisenberg
15. Which base is found in RNA but not in DNA?A ThymineB GuanineC UracilD Cytosine
16. Apart from mercury, which element is a liquid at 20°C?A BromineB GalliumC CaesiumD Iodine
17. Which part of the brain is mainly responsible for balance and the coordination of movement?A CerebrumB CerebellumC HypothalamusD Medulla oblongata
18. Which is the largest moon in the solar system?A TitanB CallistoC IoD Ganymede
19. Marble is formed when which rock is changed by heat and pressure?A SandstoneB ShaleC LimestoneD Granite
20. Which is the SI base unit of luminous intensity?A CandelaB LumenC LuxD Lambert
ANSWERS
1. A) Tungsten
Tungsten melts at about 3,422°C. The other three are all above 3,000°C too.
2. C) Ribosome
3. D) Venus
Venus takes about 243 Earth days to rotate once, which is longer than its year of about 225 days. Mercury takes about 59 days.
4. B) Farad
The henry measures inductance, the siemens conductance and the weber magnetic flux.
5. A) Vitamin B1 (thiamine)
A lack of niacin causes pellagra, and a lack of vitamin D causes rickets.
6. C) J.J. Thomson
Rutherford discovered the atomic nucleus and Chadwick the neutron.
7. D) Oxygen
Oxygen makes up about 46% of the crust by mass, followed by silicon, aluminium and iron.
8. A) Muon
Pions and kaons are mesons, and the neutron is a baryon. All three are made of quarks; leptons are not.
9. D) Pulmonary vein
The pulmonary veins are the only veins in the adult body that carry oxygen-rich blood.
10. B) Carbon dioxide
11. C) Sulfuric acid
12. A) Corundum
Corundum (ruby and sapphire) is 9 on the Mohs scale, topaz 8, quartz 7 and orthoclase 6. Only diamond, at 10, is harder.
13. B) About 8 minutes
The average is about 8 minutes and 20 seconds.
14. D) Werner Heisenberg
15. C) Uracil
Uracil takes the place of thymine in RNA.
16. A) Bromine
Gallium (about 30°C) and caesium (about 28°C) melt just above room temperature, so they would melt in your hand.
17. B) Cerebellum
18. D) Ganymede
Jupiter's moon Ganymede is larger than the planet Mercury. Saturn's Titan is the second largest.
19. C) Limestone
Sandstone becomes quartzite and shale becomes slate.
20. A) Candela
The lumen and the lux are units derived from the candela.
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