A solution of salt in water is a
(a) compound.
(b) homogeneous mixture.
(c) heterogeneous mixture.
(d) element.
(a) compound.
(b) homogeneous mixture.
(c) heterogeneous mixture.
(d) element.
Correct option (b) homogeneous mixture
Explanation of correct option.
1. Homogeneous mixtures are those mixtures in which a solute particle is completely soluble in the solvent and cannot be separated by any physical method like filtration. For example sugar solution, salt solution, and alloys.
2. The salt solution is an example of an aqueous solution. It means that salt is dissolved in water and the component which is dissolved is called the solute.
3. When salt is dissolved in water, the salt is distributed uniformly in the solution. Thus, the salt solution is a homogeneous mixture.
Explanation of incorrect option.
1. Compounds are the chemical substances that are formed when two or more elements are chemically combined together in a fixed ratio. For example, water. Since salt water has variable composition, therefore, it is a mixture, not a compound.
2. Heterogeneous mixtures are those mixtures in which a solute particle is not soluble in the solvent, it either settles down at the bottom or remains suspended in the solvent. Heterogeneous mixtures can be separated by some physical method like filtration. Since in salt solution, salt is completely soluble in water, hence it is a homogeneous mixture not a heterogeneous.
3. Elements are substances which are made up of only one kind of atom. For example metals. Since the salt solution is made up of salt and water, it cannot be an element, it has more than one kind of particle.
Conclusive statement- Option (B) is correct.
Correct option (b) homogeneous mixture
Explanation of correct option.
1. Homogeneous mixtures are those mixtures in which a solute particle is completely soluble in the solvent and cannot be separated by any physical method like filtration. For example sugar solution, salt solution, and alloys.
2. The salt solution is an example of an aqueous solution. It means that salt is dissolved in water and the component which is dissolved is called the solute.
3. When salt is dissolved in water, the salt is distributed uniformly in the solution. Thus, the salt solution is a homogeneous mixture.
Explanation of incorrect option.
1. Compounds are the chemical substances that are formed when two or more elements are chemically combined together in a fixed ratio. For example, water. Since salt water has variable composition, therefore, it is a mixture, not a compound.
2. Heterogeneous mixtures are those mixtures in which a solute particle is not soluble in the solvent, it either settles down at the bottom or remains suspended in the solvent. Heterogeneous mixtures can be separated by some physical method like filtration. Since in salt solution, salt is completely soluble in water, hence it is a homogeneous mixture not a heterogeneous.
3. Elements are substances which are made up of only one kind of atom. For example metals. Since the salt solution is made up of salt and water, it cannot be an element, it has more than one kind of particle.
Conclusive statement- Option (B) is correct.
