GK (General Science)

Laryngitis is the inflammation of the larynx (voice box), which is located in the throat. The larynx contains the vocal cords and is responsible for producing sound. When inflamed, it causes hoarseness or loss of voice. The liver (A) is involved in metabolism, ear (B) in hearing/auditory function, and brain (C) in neural processing - none are directly affected by laryngitis.

Nichrome (nickel-chromium alloy) is the standard material for heating elements because it has high electrical resistance, can withstand temperatures over 1000°C without oxidizing, and maintains structural integrity when heated repeatedly. Tungsten has a very high melting point but is used in incandescent bulb filaments, not heating elements. Pure iron would oxidize and rust quickly at high temperatures. Chromium alone is not used for heating elements - it's the chromium in nichrome that provides corrosion resistance.

Hepatitis is an inflammatory condition of the liver, commonly caused by viral infections.

Evaporation is the phase transition from liquid to gas that occurs at the surface of a liquid.

Chloroquine is a well-known antimalarial medication used to prevent and treat malaria.

An adult human skeleton typically consists of 206 bones.

Nuclear fission occurs when a heavy nucleus is struck by a neutron, causing it to split into smaller nuclei and release energy.

Otitis is the medical term for inflammation or infection of the ear.

A washing machine uses an electric motor to convert electrical energy into mechanical energy to rotate the drum.

Meristematic tissue in plants consists of undifferentiated cells that are actively dividing, allowing for plant growth.

BCG (Bacillus Calmette-Guerin) is the vaccine used to prevent tuberculosis.

Scurvy is caused by a deficiency of Vitamin C, which is chemically known as ascorbic acid.

A battery charger takes electrical energy from an external source and converts it into chemical energy stored within a battery. A battery itself acts as a source of chemical energy, while a dynamo converts mechanical energy to electrical energy.

Phloem is the vascular tissue in plants responsible for the translocation of organic nutrients, primarily sugars, from the leaves to other parts of the plant. Xylem is the tissue responsible for water conduction.

Tungsten has an extremely high melting point (about 3422 degrees Celsius), which allows it to glow white-hot without melting when an electric current passes through it. This property makes it ideal for incandescent bulb filaments.

Melting is the phase transition where a substance changes from a solid state to a liquid state upon heating. Evaporation is liquid to gas, and sublimation is solid to gas.

Xylem is the specialized plant tissue that transports water and dissolved minerals from the roots to the rest of the plant. Phloem is responsible for transporting food.

ATS stands for Anti-Tetanus Serum, which is used to provide passive immunity against the tetanus toxin. BCG is a vaccine for tuberculosis, and Chloroquin is for malaria.

Sclerenchyma cells have thick, lignified walls that provide structural support and rigidity to the plant body. They are typically found in mature parts of the plant that are no longer growing.

Encephalitis is an inflammation of the brain tissue, usually caused by a viral infection. It directly affects the central nervous system.

Sublimation is the process where a substance transitions directly from a solid phase to a gas phase without passing through the liquid phase. Examples include dry ice and iodine.

The speed of light in a vacuum is approximately 300,000,000 meters per second, which is written in scientific notation as 3 x 10^8 m/s.

Freezing is the phase change where a liquid turns into a solid. This occurs when the temperature of the liquid is lowered below its freezing point.

A battery stores energy in chemical form and releases it as electrical energy during discharge. This is the reverse process of a battery charger.

A dynamo (or generator) uses electromagnetic induction to convert mechanical energy (rotation) into electrical energy. A battery does the opposite.