Explanation

• Sublimation is the transition of a substance from the solid to the gas phase without going through the liquid phase.
• This means that a solid changes directly into a gas, without first melting into a liquid.

Explanation

• Distillation is a process that involves boiling a liquid and then collecting the condensed steam.
• Which is free from many impurities, resulting in a purified liquid.
• This process is commonly used to purify water, alcohol, and other liquids.

Explanation

The incorrect statement about non-metals is: Non-metals are solid at room temperature.

Non-metals are typically:

• Non-metal are gases
• Non-metals have low melting and boiling point
• Non-metal are poor conductor of heat and electricity
• Non-metal are dull and soft

Explanation

• The ear canal, also known as the external auditory canal.
• It is the tube that connects the outer ear to the middle ear.
• It transfers sound waves from the outer ear to the eardrum, which then transmits the vibrations to the middle ear.

Explanation

• Diffused reflection occurs when parallel rays of light hit a rough surface, scattering in different directions.
• This type of reflection is characterized by a random change in direction of the reflected light, resulting in a diffuse or scattered beam.

Examples:

• Wall
• Paper
• Cloth
• Cardboards

Explanation

• A gear (cog) is a toothed wheel that meshes with other gears to transmit rotational motion or change the direction of force.
• The pointed edges like teeth are used to engage with other gears and transmit power.

Explanation

• When Hyder hits the nail with a hammer, kinetic energy (the energy of motion) is involved as the hammer moves towards the nail.
• Sound energy is also involved as the hammer strikes the nail, producing a sound.
• However, electrical energy is not involved in this process.

Explanation

• Suspensions are mixtures in which the solute particles are dispersed throughout the solvent, but are not dissolved.
• The particles are visible to the naked eye and settle out of the mixture over time.
• Examples: Muddy water, milk and blood.

Explanation

• Salt (a solid) dissolves in water (a liquid) to form a solution.
• Making it a classic example of a solid-liquid solution.

Explanation

• Tapeworms are a type of parasite that live inside the digestive system of their host organism (such as humans or animals) and feed on the nutrients absorbed by the host.
• They do not contribute to the host's survival or well-being, and can in fact harm the host by competing for nutrients and causing disease.