Explanation

Family B elements are found in the middle of the periodic table (d-block).

They are called transition elements because they form a bridge between highly reactive metals (s-block) and nonmetals (p-block).

Explanation

Molarity is calculated by dividing the number of moles of solute by the volume of solution in liters. 

Therefore, the molarity of pure water is approximately 55.56 moles/L, or approximately 55.5 M. 

Explanation

Van der Waal's forces are weak intermolecular forces caused by temporary dipoles; they hold molecules together lightly.

Ionic, covalent, and metallic bonds are much stronger because they involve full electron sharing or electrostatic attraction between ions.

Explanation

Temperature: Gas solubility usually decreases as temperature rises because higher heat gives gas molecules more energy to escape.

Nature of the gas: Some gases (like CO₂) dissolve easily in water due to chemical interactions, while others (like O₂) are less soluble.

Pressure: According to Henry’s Law, solubility of a gas increases with increasing pressure above the liquid.

Explanation

Sodium is a chemical element with the symbol Na and atomic number 11.

It is a soft, silvery-white, highly reactive metal.

Sodium is an alkali metal, being in group 1 of the periodic table.

Explanation

The formula for sulfuric acid is H2SO4.

It indicating that one molecule contains two hydrogen atoms, one sulfur atom, and four oxygen atoms.

Explanation

Fungi require a damp and humid environment for optimal growth.

Moisture helps in spore germination and nutrient absorption.

Explanation

Locomotion is the movement of the whole organism from one place to another.

Example: Walking, running, or swimming in animals.

Explanation

Plant growth requires cell division, elongation, and differentiation to form tissues and organs.

These processes work together to ensure increase in size and functional specialization.

Explanation

Agrochemicals include fertilizers (to enhance soil nutrients) and pesticides (to control pests and diseases).

Together, they improve crop yield and protection.