General Science and Technology Quiz

Charles Babbage is widely recognized as the 'father of the computer' for designing the first mechanical computer: the Difference Engine in the 1820s and the more complex Analytical Engine. The option 'Charles Cabbage' appears to be a spelling error in the distractor.

The first electronic digital computer, ENIAC (Electronic Numerical Integrator and Computer), was completed in 1945 at the University of Pennsylvania, not 1937. However, some sources reference earlier electromechanical devices like the Atanasoff-Berry Computer (1937-1942). This question's accepted answer of 1937 likely refers to the ABC project's beginning or other early computing devices.

Frogs don't have external ears like mammals. They have a tympanum (eardrum) visible on the side of their head, but no external ear structures or pinnae. Giraffes and cats both have visible external ears. This is a common zoology fact testing knowledge of amphibian vs. mammal anatomy.

Both partridges and ostriches are ground-nesting birds that lay their eggs in scrapes or nests on the ground. Crows, conversely, typically build nests high in trees or on man-made structures like pylons.

Valentina Tereshkova, a Soviet cosmonaut, became the first woman in space when she flew the Vostok 6 mission in 1963. Kalpana Chawla was the first Indian-born woman in space, but her flight occurred much later in 1997.

The Nile is traditionally considered the longest river in the world, stretching approximately 6,650 kilometers (4,130 miles) through northeastern Africa. The Volga is the longest in Europe, but much shorter than the Nile.

Ostriches (large flightless birds) and tortoises (reptiles) are both egg-laying animals. Lions are placental mammals that give birth to live young. This question tests knowledge that birds and reptiles lay eggs, while mammals (with exceptions like platypus and echidna) give birth to live young.

Squirrels are well-known for gathering and storing nuts and acorns for winter. Honeybees store honey and pollen in their hives as food reserves. Tigers are carnivores that hunt fresh prey and don't store food - they consume what they catch immediately.

Vultures are birds of prey that eat meat (carrion), which makes them carnivores. Crows are omnivores that eat both plants and animals, while goats are herbivores that only eat plant material. Therefore, the vulture is the only carnivore among the options.

Glucose has the chemical formula C6H12O6, representing a six-carbon monosaccharide (simple sugar). C5H10O11 doesn't balance, C12H22O11 is sucrose (table sugar - a disaccharide), and C4H8O10 is not a chemically valid formula.

Chloroform has the chemical formula CHCl3, consisting of one carbon, one hydrogen, and three chlorine atoms. CHCl5 is impossible (carbon can only bond to 4 atoms), CH2Cl2 is dichloromethane, and CCl4 is carbon tetrachloride.

The formula C6H6OH is chemically ambiguous/imprecise notation. However, looking at the options: catechol (benzene-1,2-diol), hydroquinone (benzene-1,4-diol), and resorcinol (benzene-1,3-diol) are all benzene diols with formula C6H6O2 (properly C6H4(OH)2). The notation C6H6OH poorly represents any of these, making the question chemically inaccurate, though D is marked correct.

Ferrocene is an organometallic compound consisting of two cyclopentadienyl rings bound on opposite sides of a central iron atom. Its chemical formula is Fe(C5H5)2, which totals FeC10H10.

Dr. Daniel Hale Williams performed the first successful open heart surgery on July 9, 1893, at Provident Hospital in Chicago. He repaired a stab wound to the pericardium (the sac surrounding the heart) of a patient named James Cornish, who survived and lived for decades afterward.

The first successful human-to-human heart transplant was performed by Dr. Christiaan Barnard in Cape Town, South Africa in 1967. The patient lived for 18 days after the surgery. This medical milestone marked the beginning of modern transplant medicine.

The electrocardiograph (ECG) was invented by Willem Einthoven in 1903. He received the Nobel Prize in 1924 for this invention, which revolutionized cardiac diagnosis by allowing doctors to record the electrical activity of the heart.