General Studies (Everyday Science)

Skin consists of two main layers: The outer layer, known as the epidermis and the inner layer, known as the dermis.

Phobos is the larger and inner of Mars' two natural satellites (moons), along with Deimos. It orbits very close to Mars, completing about three orbits per Martian day. Uranus (B) has 27 moons including Titania and Oberon, Saturn (C) has 83 moons including Titan, and Venus (D) has no moons.

The gelling agent in agar-agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae.

Like the sun and stars, the moon rises in the east and sets in the west due to the Earth's rotation. During a full moon, it rises at approximately the same time the sun sets.

Gases have much lower densities compared to liquids like water, oil, or alcohol because their molecules are far apart. Therefore, for a given volume, a gas will weigh significantly less than the liquid options.

Archimedes' principle states that an object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid it displaces. A balloon rises because the gas inside is less dense than the surrounding air, creating a buoyant force greater than its weight.

When copper or its compounds are introduced into a flame, they emit a characteristic blue-green color. This is a standard result in flame tests used to identify metal ions in chemistry.

Halley's Comet has an orbital period of approximately 76 years. Having last appeared in 1986, it is calculated to return to the inner solar system in mid-2061 to early 2062.

Fusion is the process that powers the sun and the stars. It is the reaction in which two atoms of hydrogen combine together, or fuse, to form an atom of helium. 

Galileo Galilei was the first to observe Saturn's rings through a telescope in 1610, though he initially described them as "appendages." It was later in 1655 that Christiaan Huygens correctly identified them as a ring system.

Hemoglobin is a protein in red blood cells that carries oxygen throughout the body. It contains iron atoms, which bind to oxygen molecules and give blood its red color.

Seeds are best preserved in cool and dry conditions to prevent premature germination and the growth of mold or fungi. High humidity or heat can damage the embryo and reduce the viability of the seeds.

In physics, linear momentum is defined as the product of an object's mass and its velocity (p = mv). It is a vector quantity that describes the motion of an object.

The magnifying power of a simple magnifying glass is given by the formula M = 1 + d/f, where d is the least distance of distinct vision and f is the focal length. This formula applies when the final image is formed at the near point of the eye.

One mechanical horsepower is defined as approximately 745.7 watts, which is commonly rounded to 746 watts in physics problems. It is a unit used to measure the rate at which work is done.

The standard formula for speed is distance divided by time. Given the variables provided where distance is S and time is D, the speed T equals S/D.

Dmitri Mendeleev is credited with creating the first version of the periodic table in 1869, arranging elements by atomic mass. While others like Moseley later refined it using atomic numbers, Mendeleev is recognized as its primary creator.

Blood is classified as a connective tissue in biological terms because it consists of cells suspended in a liquid matrix (plasma). Liver, skin, and heart are organs.

The retina is the light-sensitive inner lining of the eye where images are focused and converted into neural signals for the brain.

Ohm's Law, which describes the relationship between voltage, current, and resistance, is named after the German physicist Georg Simon Ohm.

The silvered surfaces of a vacuum flask reflect infrared radiation back into the flask or away from it, minimizing heat transfer. This is effective because shiny surfaces are poor emitters and good reflectors of thermal radiation.

Correct Answer: 'Bhopal gas tragedy’ was due to the leakage of MIC.

Brass is an alloy of copper and zinc, while bronze is an alloy of copper and tin. Copper is the common element in both.

Fog is a colloid where liquid water droplets are dispersed in a gas (air).

An ELISA test may be used to diagnose HIV, which causes AIDS.