scientist, discoveries & inventions MCQ section 1 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (a)

Answer: (d)

A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Evangelista Torricelli is universally credited with inventing the barometer in 1643.

Answer: (d)

The North Pole is the northernmost point on the Earth, lying diametrically opposite the South Pole. It defines geodetic latitude 90° North as well as the direction of true north.

At the North Pole, all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value.

Robert Edwin Peary was an American explorer who claimed to have led the first expedition, on April 6, 1909, to reach the geographic North Pole.

Answer: (b)

Answer: (b)

There are many claimants to the title of the first company to produce practical transistor radios, often it is attributed to Sony (originally Tokyo Telecommunications Engineering Corporation).

A transistor radio is a small portable radio receiver that uses transistor-based circuitry. Following their development in 1954, they became the most popular electronic communication device in history, with billions manufactured during the 1960s and 1970s.

Their pocket size sparked a change in popular music listening habits, allowing people to listen to music anywhere they went.