Internet Technology & General Science Quiz

Sodium bicarbonate (NaHCO₃) is commonly known as baking soda, widely used in baking as a leavening agent. Washing soda is sodium carbonate (Na₂CO₃), soda ash is sodium carbonate's industrial name, and bitter salt typically refers to magnesium sulfate (Epsom salt).

GHz and MHz measure clock frequency - the number of clock cycles per second that a processor executes. This is NOT instructions per second (A), data transfer rate (C), or throughput (D). Clock speed determines how many operations a CPU can attempt per cycle.

Closing shades or blinds prevents direct sunlight from entering and heating up your home - this is the most effective option. Opening the refrigerator (A) actually adds heat to the room. Turning off electronics (B) helps minimally. Opening windows during hot day (C) lets heat in.

You see your reflection in a mirror because light is reflected off the smooth surface at the same angle it arrives. Light is NOT absorbed (A - that would make the mirror appear black), diffracted (B - that spreads light in patterns), or refracted (D - that bends light through materials).

Increasing string length decreases the pitch (frequency) of vibration - longer strings vibrate more slowly, producing lower notes. This is NOT about loudness (A) or softness (B) - those are amplitude, not frequency. Shorter strings produce higher pitches (C).

Wood is the best thermal insulator among the options - it has low thermal conductivity, meaning it resists heat flow effectively. Steel (A), iron (B), and glass (C) are much better conductors of heat and would NOT separate heat from cold well.

Unani medicine originated in Greece and is based on the teachings of Hippocrates and Galen. It was later developed by Arab and Persian physicians, who brought it to India during the medieval period. The system is named after Yunani (Greek), reflecting its Greek origins.

The human eye has an estimated resolution equivalent to approximately 120 megapixels. This accounts for the density of photoreceptors in the retina and the eye's field of view, though the eye's 'processing' is very different from a digital camera's sensor.

The internet (specifically TCP/IP) was first deployed in 1983 when ARPANET switched to the TCP/IP protocol suite. While ARPANET began in 1969, 1983 marks the official deployment of the modern internet protocol that forms the foundation of today's internet. 1991 saw the public release of the World Wide Web.

Firefox, Internet Explorer, and Chrome are all well-known web browsers used to access the internet. "Adventurer" is not a real browser name - it appears to be a made-up option. Web browsers are software applications that allow users to access and navigate websites on the World Wide Web.

The original six top-level domains established in the 1980s were .com, .org, .net, .edu, .gov, and .mil. These represented different categories: commercial (.com), network (.net), government (.gov), educational (.edu), military (.mil), and organizations (.org). The .us domain is a country-code TLD that was not part of this initial set.

TCP (Transmission Control Protocol) is a core internet protocol that provides reliable, ordered delivery of data between applications. XML is a markup language for data storage, RS232 is a serial communication hardware standard, and HTML is a markup language for web pages - none are network protocols.

Baud rate measures the number of signal changes per second in a communication channel. In modern digital communications, this is commonly equated to bits per second. Bytes per second would be 8 times the baud rate, and frames per second refers to display refresh rates, not data transmission.

DSL stands for Digital Subscriber Line, a technology that provides high-speed internet access over traditional telephone lines. The other options are made-up or incorrect expansions of the acronym. DSL allows simultaneous internet and voice traffic on the same line.

The internet is the global network infrastructure of interconnected computers. The World Wide Web is an application that runs on the internet, consisting of webpages, hyperlinks, and URLs. The web is one of many services that use the internet - others include email, FTP, and VoIP. They are related but distinct concepts.