Tag: science & technology

The statement is false on both counts. Humans can survive without food for weeks (depending on body reserves), but sleep deprivation can be fatal much faster - within 11 days to two weeks for extreme cases. Therefore you cannot survive without sleep.

N95 respirators are the standard masks used to prevent the spread of H1N1 influenza virus. The '95' indicates they filter 95% of airborne particles. Options like 'N007', 'W585i', and 'SN59' are not real mask designations and appear to be garbled text.

Olympus Mons on Mars is the tallest mountain in the solar system at about 21.9 km (72,000 ft), nearly 3x higher than Mount Everest. The question is poorly phrased but the intended meaning is clear.

Philately is the formal term for stamp collecting. A philatelist collects and studies stamps, including postal history and related materials. This is a well-established hobby term.

James Watt (1736-1819) was the Scottish inventor who significantly improved the steam engine's efficiency in the late 1700s, making it practical for industrial use. While earlier steam engines existed (Newcomen), Watt's innovations were transformative.

Greenland is the world's largest island, covering about 2.16 million km². Australia is often mistaken for an island but is classified as a continent due to its size and geological distinctiveness. South America and UK are also not islands.

The 1's complement of a binary number is obtained by flipping all bits - changing 0s to 1s and 1s to 0s. For 101100, flipping gives 010011. This operation is commonly used in computer arithmetic for representing negative numbers in signed binary formats.

PARAM, developed by the Centre for Development of Advanced Computing (C-DAC) in 1991, was India's first indigenously built supercomputer. It was developed in response to technology denial regimes and marked India's entry into high-performance computing. PARAM means 'supreme' in Sanskrit.

The Intel 4004, released in 1971, was a 4-bit processor and the first commercially available microprocessor. It contained 2,300 transistors and could execute 92,000 instructions per second. The '4004' designation reflects its 4-bit architecture.

Dry ice (solid carbon dioxide) was first observed by French chemist Charles Thilorier in 1825 when he opened a pressurized container of liquid carbon dioxide and noticed the solid formation. This discovery was significant for understanding CO2's properties. 1734 is too early, 1892 and 1906 are much later dates.