When considering the different forms of hardness in water, it is important to understand the types of compounds that contribute to hardness. Temporary hardness is primarily caused by the presence of bicarbonates (HCO₃⁻) in water. Temporary hardness can be removed by boiling the water, which causes bicarbonate to decompose.

1. **Chlorides**: These salts, such as sodium chloride, do not contribute to temporary hardness; they are usually associated with permanent hardness.

2. **Sulphates**: Like chlorides, sulphates (e.g., calcium sulphate) are typically associated with permanent hardness and do not contribute to temporary hardness.

3. **Bicarbonates**: The primary contributor to temporary hardness is bicarbonates, such as calcium bicarbonate.

4. **All of the above**: This option suggests that all listed compounds contribute to temporary hardness, which is not correct.

### Final Answer
The correct answer is **c. Bicarbonates**.

Question

When considering the different forms of hardness in water, it is important to understand the types of compounds that contribute to hardness. Temporary hardness is primarily caused by the presence of bicarbonates (HCO₃⁻) in water. Temporary hardness can be removed by boiling the water, which causes bicarbonate to decompose.

1. **Chlorides**: These salts, such as sodium chloride, do not contribute to temporary hardness; they are usually associated with permanent hardness.
   
2. **Sulphates**: Like chlorides, sulphates (e.g., calcium sulphate) are typically associated with permanent hardness and do not contribute to temporary hardness.

3. **Bicarbonates**: The primary contributor to temporary hardness is bicarbonates, such as calcium bicarbonate.

4. **All of the above**: This option suggests that all listed compounds contribute to temporary hardness, which is not correct.

### Final Answer
The correct answer is **c. Bicarbonates**.

Knowee AI · Accepted Answer

When considering the different forms of hardness in water, it is important to understand the types of compounds that contribute to hardness. Temporary hardness is primarily caused by the presence of bicarbonates (HCO₃⁻) in water. Temporary hardness can be removed by boiling the water, which causes bicarbonate to decompose.

1. **Chlorides**: These salts, such as sodium chloride, do not contribute to temporary hardness; they are usually associated with permanent hardness.
   
2. **Sulphates**: Like chlorides, sulphates (e.g., calcium sulphate) are typically associated with permanent hardness and do not contribute to temporary hardness.

3. **Bicarbonates**: The primary contributor to temporary hardness is bicarbonates, such as calcium bicarbonate.

4. **All of the above**: This option suggests that all listed compounds contribute to temporary hardness, which is not correct.

### Final Answer
The correct answer is **c. Bicarbonates**.

Temporary hardness is due toa.Chloridesb.Sulphatesc.Bicarbonatesd.all the above

Question

Temporary hardness is due to

Solution

Final Answer

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