Explanation

Antagonist muscles are pairs of muscles that work in opposite directions to control movement around a joint.

One muscle contracts while the other relaxes, and vice versa.

This opposing action allows for precise control over movement.

Explanation

Chondrocytes are the cells that make up cartilage, a type of connective tissue found in various parts of the body, such as joints, ears, nose, and ribs.

Chondrocytes produce and maintain the cartilage matrix, which consists of collagen and proteoglycans.

Explanation

Latent heat of vaporization is the energy required to change a liquid into a gas (or vice versa) without changing its temperature.

Latent heat of fusion is the energy required to change a solid into a liquid (or vice versa) without changing its temperature.

Explanation

Steel is more elastic than rubber, glass, and wood.

Elasticity refers to the material's ability to return to its original shape after being deformed.

Steel has a higher modulus of elasticity (Young's modulus), meaning it can withstand greater stress and still return to its original shape.

Explanation

• In the evaporation process, liquid molecules gain energy and move faster.
• It allowing them to escape from the surface of the liquid into the surrounding air.
• This occurs when the molecules have enough energy to overcome the intermolecular forces holding them to the surface.

Explanation

• Intermolecular forces are weaker than ionic or covalent bonds.
• Intermolecular forces are the attractive forces between molecules.
• While ionic and covalent bonds are the forces that hold atoms together within a molecule.

Explanation

• Synthetic resins are used in places where adhesion is required.
• They provide strong bonding properties, making them ideal for coatings, glues, and composite materials.

Explanation

• In Rutherford's famous experiment, known as the "Gold Foil Experiment" or "Rutherford's Scattering Experiment", a thin layer of zinc sulphide (ZnS) was used as the screen to detect the scattered alpha particles.
• Zinc sulphide is a phosphor that emits light when struck by radiation, allowing Rutherford to visualize the trajectory of the alpha particles.

Explanation

• Electronic configuration refers to the distribution of electrons within an atom or molecule.
• It shows how the electrons are arranged in different energy levels (shells) and sublevels (orbitals) around the nucleus.

Explanation

• Enzymes are biological molecules made up of proteins, which catalyze chemical reactions, speeding up metabolic processes in living organisms.
• Proteins provide the structure and active site for enzymes to bind substrates and facilitate chemical reactions.