Everyday Science MCQs

A lunar eclipse occurs on a Full Moon when the Earth is exactly between the Sun and the Moon. The Earth's shadow falls on the Moon. Lunar eclipses can be total, partial, or penumbral. A solar eclipse occurs on a New Moon. Lunar eclipses are visible from anywhere on the night side of the Earth. The Moon appears reddish during a total lunar eclipse (blood moon).

White light splits into 7 colors when passed through a prism: Red, Orange, Yellow, Green, Blue, Indigo, Violet (ROYGBIV). This phenomenon is called dispersion. It was first demonstrated by Isaac Newton. The separation occurs because different wavelengths of light bend at different angles when passing through the prism. This is the basis of spectroscopy.

The UN International Drug Control Programme (UNDCP) headquarters is located in Vienna, Austria. The UNDCP was established in 1991 to coordinate international efforts to combat drug abuse and illicit drug trafficking. It is part of the UN Office on Drugs and Crime (UNODC). Vienna is also the headquarters of the International Atomic Energy Agency (IAEA).

Vitamin D is produced in the skin when exposed to sunlight (UVB radiation). It is the only vitamin that the body can synthesize. Vitamin D is essential for calcium absorption and bone health. The recommended sun exposure varies, but deficiency is common in areas with limited sunlight. Vitamin D is also available in supplements and fortified foods.

China's EAST (Experimental Advanced Superconducting Tokamak) nuclear fusion reactor achieved a temperature of 160 million degrees Celsius, which is more than 10 times hotter than the sun's core. Actually, the correct answer is 5 times hotter than the sun's core temperature. This achievement is part of efforts to develop sustainable fusion energy.

Botanically speaking, a tomato is classified as a fruit because it develops from the fertilized ovary of a flower and contains seeds, satisfying the scientific definition of a fruit. However, in common culinary and everyday usage, it is typically treated and referred to as a vegetable due to its savory flavor profile and how it's used in cooking.

Pakistan became the first country in the world to introduce the WHO-approved typhoid conjugate vaccine (TCV). This was introduced in 2019 as part of efforts to control drug-resistant typhoid. The vaccine provides longer-lasting immunity and is recommended for children. This initiative was supported by Gavi, WHO, and other international partners.

Air is a mixture of gases, primarily nitrogen (78%), oxygen (21%), argon (0.93%), and carbon dioxide (0.04%). It also contains water vapor and trace gases. It is not an element because it contains multiple substances. It's not a compound because the gases are not chemically bonded. It's not an electrolyte because it's not a conducting solution.

Sir Isaac Newton discovered gravity. The story goes that an apple falling from a tree inspired him to formulate the law of universal gravitation. His work on gravity was published in 'Philosophiæ Naturalis Principia Mathematica' in 1687. Nikola Tesla worked on electricity, Rudolf Diesel invented the diesel engine, and Mendel studied genetics.

Fungi cannot prepare their own food. They are heterotrophs, meaning they obtain nutrients by absorbing organic matter from their surroundings. Lichens are symbiotic organisms containing algae and fungi. Autophytes and holophytes can produce their own food through photosynthesis. Fungi are classified separately from plants in modern biology.