Helium is lighter than air and non-flammable, making it safe and ideal for filling balloons to make them float.

The iris adjusts the pupil size to regulate the light that enters the eye, helping maintain clear vision.

Red blood cells contain hemoglobin, which binds to oxygen and transports it from lungs to body tissues.

O negative blood lacks A, B, and Rh antigens, making it compatible with all blood types for donation.

Solar cells or photovoltaic cells convert sunlight directly into electrical energy using the photoelectric effect.

At 1 atmospheric pressure (sea level), water boils at 100°C, which is its standard boiling point.

Diamond has a rigid lattice structure that makes it the hardest naturally occurring material on Earth.

The cerebellum, located at the back of the brain, regulates posture, coordination, and balance.

Force is measured in Newtons (N), defined as the force required to accelerate a 1 kg mass by 1 m/s².

Pure water has a neutral pH of 7, meaning it is neither acidic nor basic.

Insulin, produced by the pancreas, helps regulate glucose levels in the blood by facilitating its uptake into cells.

Light travels at approximately 300,000,000 meters per second in a vacuum—the universal speed limit.

A barometer measures atmospheric pressure and is essential in weather forecasting and aviation.

The body stores energy in the form of glycogen, a polysaccharide that breaks down into glucose when needed.

Common salt is sodium chloride (NaCl), essential for human health and widely used in food preservation.

Kidneys filter waste from the blood and regulate water and salt balance, playing a crucial role in homeostasis.

The Earth rotates on its axis, resulting in the alternation of daylight and darkness every 24 hours.

Nitrogen makes up about 78% of Earth’s atmosphere and is vital for plant growth through the nitrogen cycle.

Leaves contain chlorophyll, which captures sunlight to convert carbon dioxide and water into glucose and oxygen.

When a rubber band is stretched, it stores potential energy, which is converted to kinetic energy when released.

Vitamin D is synthesized in the skin through sunlight exposure and is essential for calcium absorption and bone health.

Ampere is the SI unit for measuring electric current and is named after André-Marie Ampère, a pioneer in electromagnetism.

Oxygen is the most abundant element by mass in the human body as it is a major component of water and bodily fluids.

Narora Atomic Power Station is situated in Bulandshahr district of UP and plays a crucial role in India's nuclear energy generation.

Roots contain tiny hairs that absorb water and nutrients.

Natural gas is primarily composed of methane (CH₄), a clean-burning fuel.

Seismographs record the intensity and duration of tremors.

Distillation separates salt and water based on boiling points.