Explanation

Ozone (O₃) is a triatomic molecule of oxygen, not a noble (rare) gas.

Radon, Xenon, and Krypton are all noble gases found in Group 18 of the periodic table.

Explanation

The average weight of an adult human brain is about 1300 to 1400 grams.

It makes up around 2% of the total body weight but consumes about 20% of the body's energy.

Explanation

A geostationary satellite orbits the Earth at a speed that matches the Earth's rotation, staying fixed above the same point on the Earth's surface.

This allows it to maintain a constant position relative to the Earth.

Explanation

Gears work on the principle of transmitting rotational force from one gear to another.

This helps in changing the speed, direction, or torque in a mechanical system.

Explanation

Conduction is the process through which heat is transferred from the hotter to the colder area of a conductor, like a metal rod.

It occurs when particles in the hot region collide with particles in the cooler region, transferring energy.

Explanation

An aerosol is a colloidal suspension of liquid droplets in a gas, commonly air.

Examples include fog, mist, and spray deodorants.

Explanation

Explanation

An electrolytic cell uses electric current to drive a chemical reaction (usually decomposition).

This process is called electrolysis, clearly representing the chemical effect of current.

Explanation

Pitch determines whether a sound is shrill (high-pitched) or grave (low-pitched).

It depends on the frequency of the sound waves — higher frequency means higher pitch.

Explanation

Genes are units of heredity located on chromosomes that control the traits passed from parents to offspring.

They determine physical and biochemical characteristics in all living organisms.