Correct option is D
Sodium chloride is the chemical name for common salt, which is used extensively for seasoning food, as well as in industrial applications like de-icing roads and in water softening. Sodium chloride is an ionic compound formed by the reaction of sodium (Na) and chlorine (Cl) atoms.
Structure and Properties:
- NaCl is composed of sodium (Na⁺) cations and chloride (Cl⁻) anions, held together by ionic bonds.
- It dissolves easily in water, making it useful for biological processes, such as nerve transmission and muscle function.
Potassium Nitrate (KNO₃): This is commonly known as saltpeter, which is used in fertilizers, food preservation, and fireworks.
Ammonium Chloride (NH₄Cl): Ammonium chloride is used in dry cell batteries, as a flux in metalwork, and in certain medical treatments.
Calcium Carbonate (CaCO₃): Calcium carbonate is a chemical compound found in limestone, marble, and chalk. It is commonly used in building materials and as an antacid in medicine.
