Explanation

Explanation

A capacitor is a device used to store electrical charge and electrical energy.

It consists of at least two electrical conductors separated by a distance.

It is widely used in electronic circuits for filtering, timing, and energy storage.

Explanation

The larynx is commonly known as the voice box because it houses the vocal cords.

It is responsible for producing sound.

It is located in the throat.

Explanation

An element with 7 valence electrons needs 1 more electron to complete its octet.

Therefore, its valency is 1, as it tends to gain 1 electron during bonding.

Explanation

Cobalt-60, an isotope of cobalt, is widely used in radiation therapy to treat cancer.

It emits gamma rays, which help destroy cancerous cells in medical treatments.

Explanation

Sucrose is also known as Table sugar.

Sucrose is a type of common sugar.

It is a disaccharide, a molecule which consists of two monosaccharides: glucose and fructose.

Explanation

Explanation

Small intestine is the primary site for nutrient absorption into the bloodstream.

It contains villi and microvilli, which increase the surface area for efficient absorption of digested food.

Explanation

Light is a form of energy.

Light is actually energy made of small particles called photons.

Explanation

DNA is the fundamental molecule that carries genetic information, forming the basis of heredity alongside chromosomes and genes.

It is the hereditary material in almost all organisms, encoding the instructions for building proteins and other important molecules.

Explanation

A geostationary satellite orbits the Earth once every 24 hours, matching the Earth's rotation.

This keeps it fixed over the same spot on the equator, making it ideal for communication and weather monitoring.

Explanation

The chemical formula of baking soda is NaHCO₃, which stands for sodium bicarbonate.

The chemical name of baking soda is sodium hydrogen carbonate or sodium bicarbonate (NaHCO3).

Sodium bicarbonate is non flammable

Baking soda is basic in nature.

Explanation

Chilies are rich in Vitamin C, which boosts immunity and helps in skin health.

They contain more Vitamin C than oranges by weight.

Explanation

In a longitudinal wave, particles of the medium move parallel to the direction of wave propagation.

Sound waves in air are a common example of longitudinal waves.

Explanation

The renewable energy sources are:

• Water energy
• Wind energy
• Tidal energy
• Hydroelectric
• Ocean energy
• Geothermal energy
• Biomass
• Biogas

The non-renewable energy sources are:

• Fossil fuels or Hydrocarbon fuel (Oil, Natural gas, Coal)
• Nuclear energy

Explanation

Oxyacetylene flame is used in welding and cutting metals due to its high temperature.

It provides a flame temperature of about 3200°C, making it suitable for industrial applications.

Explanation

The pancreas is the enzyme “powerhouse” of digestion.

It produces the most important digestive enzymes,

which are those that break down carbohydrates, proteins, and fats.

the pancreas creates natural juices called pancreatic enzymes to break down foods.

Explanation

Explanation

Explanation

Explanation

Explanation

The part of the human body more prone to damage from the Hepatitis Virus is the Liver.

Hepatitis is an inflammation of the liver, caused by various hepatitis viruses (A, B, C, etc.).

It can lead to liver damage, cirrhosis, or liver cancer.

Explanation

Explanation

Explanation

Blood cells are made in the bone marrow.

The bone marrow is the soft, spongy material in the center of the bones.

It produces about 95% of the body's blood cells.

Explanation

Fruit and vegetables are a good source of vitamins and minerals

 including vitamin C and potassium.

Explanation

• Exposure to sunlight triggers the production of vitamin D in the skin.
• Specifically, ultraviolet B (UVB) rays from the sun interact with a compound called 7-dehydrocholesterol, converting it into vitamin D3 (cholecalciferol).
• Vitamin D is essential for calcium absorption, bone health, and immune system regulation.

Explanation

Agrostology: Study of Grasses 

Agronomy: Soil management and crop production 

Odontology: Study of teeth 

Arthrology: Study of joints 

Nephrology: Study of kidneys

Hematology: Study of blood  

Explanation

Calcium oxalate is the most common compound found in kidney stones.

It forms when excess calcium and oxalate in the urine combine, creating hard crystals that can grow into stones.

Explanation

Explanation

A radiation dosimeter is a device that measures dose uptake of external ionizing radiation.

It is worn by the person being monitored when used as a personal dosimeter, and is a record of the radiation dose received.

Explanation

• Hydrophobia, or fear of water, is a well-known symptom of rabies.
• A viral disease that affects the central nervous system.

Explanation

The cave squeaker (Arthroleptis troglodytes) is a species of frog in the family Arthroleptidae.

It is endemic to the Chimanimani Mountains in Zimbabwe.

Explanation

Iron is galvanized by coating it with zinc.

It prevents rusting and corrosion by acting as a protective barrier.

Explanation

A meteoroid is a small rocky or metallic body in outer space.

Bodies that usually fall from the sky to the Earth are called Meteorites.

These are small particles from space that enter Earth's atmosphere and survive to land on its surface.

Explanation

For water, the boiling point is 100ºC at a pressure of 1 atm

The boiling point of water decreases at higher altitudes due to Low atmospheric pressure

The boiling point of water increases with increased atmospheric pressure

The boiling point of water decreases with decreased atmospheric pressure

ND17-1-2023

Explanation

Straw, camphor, alcohol, petrol, diesel etc. catch fire easily to release heat energy and light energy.

So, these are examples of combustible substances.

Explanation

John Logie Baird, a Scottish inventor, is best known for inventing the world's first working television system in the 1920s.

He revolutionizing communication and entertainment.

Explanation

Instead of nostrils, insects breathe through openings in the thorax and abdomen called spiracles.

Insects that are diapausing or non-mobile have low metabolic rates and need to take in less oxygen.

Insects exchange oxygen and carbon dioxide through spiracles (noted by circle)

Explanation

Mirage is an example of:

• refraction of light
• total internal reflection

Example

When the reflected light ray reaches our eyes, it appears as coming from the sky or tree.

This inverted image creates an optical illusion of the presence of water or the presence of islands etc.

Explanation

Vitamins B and C are water-soluble vitamins, meaning they dissolve easily in water.

• Vitamin B: Includes several B vitamins (B1, B2, B3, etc.), all of which are water-soluble.
• Vitamin C (Ascorbic acid): Also highly soluble in water.

Explanation

A rain gauge is a meteorological instrument to measure the precipitating rain in a given amount of time per unit area.

The instrument consists of a collection container that is placed in an open area.

Explanation

Amnesia is a common term used to describe memory loss.

Loss can be temporary or permanent, but "amnesia" usually refers to temporary diversity.

Causes include head and brain injuries, certain medications, alcohol, traumatic events, or conditions such as Alzheimer's disease.

Explanation

Algae, especially phytoplankton in oceans, are responsible for producing the largest amount of oxygen on Earth.

It contributing to over 50% of the planet's oxygen supply.

Explanation

Hepatitis C is a liver infection caused by the hepatitis C virus. 

Hepatitis C is often described as “acute,” meaning a new infection, or “chronic,” meaning long-term infection.

Explanation

• Claustrophobia is the fear of enclosed spaces.
• ***
• Claustrophobia:- It is an anxiety disorder that causes an intense fear of closed spaces for example in a lift or a small room with no window.
• ***
• Claustrophobia (Fear of Enclosed Spaces)
• Fear of confined spaces (claustrophobia)
• ***

• ***

  ND4-12-2022
  

  
  

Explanation

Caffeine occurs naturally in the tea plant,

Camellia sinensis, so all brewed tea contains some caffeine. 

Tea leaves contain 3.5% caffeine,

while

Coffee beans have 1.1–2.2%.

Explanation

Sound wave is a mechanical  wave.

Explanation

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

AGM 25-12-2022

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RY12-02-23

Explanation

AB-positive blood type is known as the “universal recipient” because AB-positive patients can receive red blood cells from all blood types.

The blood group system was discovered by Austrian physician Karl Landsteiner in 1901.

He identified the ABO blood group system,

ND5-07-2023