NaCl, `MgCl_2 and CaSO_4` are known as

Options

A. 1-1 , 2 - 1 and 2 - 2 type electrolytes respectively
B. strong , weak and strong electrolytes respectively.
C. electrolytes with different value of A
D. electrolytes with same molar conductivity

Answer

To solve the question regarding the classification of NaCl, MgCl₂, and CaSO₄, we need to analyze the nature of these compounds as electrolytes.

### Step-by-Step Solution:

1. **Understanding Electrolytes**:
- Electrolytes are substances that dissociate into ions when dissolved in water, allowing the solution to conduct electricity. They can be classified as strong or weak electrolytes based on their degree of ionization.

2. **Analyzing NaCl**:
- Sodium chloride (NaCl) is a strong electrolyte. It completely dissociates into sodium ions (Na⁺) and chloride ions (Cl⁻) when dissolved in water.
- **Type**: 1,1 type electrolyte (1 positive and 1 negative ion).

3. **Analyzing MgCl₂**:
- Magnesium chloride (MgCl₂) is also a strong electrolyte. It dissociates into one magnesium ion (Mg²⁺) and two chloride ions (Cl⁻) when dissolved in water.
- **Type**: 1,2 type electrolyte (1 positive and 2 negative ions).

4. **Analyzing CaSO₄**:
- Calcium sulfate (CaSO₄) is considered a weak electrolyte because it does not completely dissociate in solution. It dissociates into one calcium ion (Ca²⁺) and one sulfate ion (SO₄²⁻), but to a lesser extent than NaCl and MgCl₂.
- **Type**: 2,1 type electrolyte (2 positive and 1 negative ion).

5. **Conclusion**:
- Based on the analysis, we can classify NaCl, MgCl₂, and CaSO₄ as follows:
- NaCl: Strong electrolyte, 1,1 type
- MgCl₂: Strong electrolyte, 1,2 type
- CaSO₄: Weak electrolyte, 2,1 type

### Final Answer:
NaCl, MgCl₂, and CaSO₄ are known as 1,1, 1,2, and 2,1 type electrolytes respectively.