Which of the following water samples are totally devoid of suspended impurities?

Options

A. River water
B. Rain water
C. Spring water
D. Ocean water

Explanation

To determine which water samples are totally devoid of suspended impurities, we need to analyze different types of water sources. Here’s a step-by-step solution:

### Step 1: Understand the Types of Water Samples
We need to consider various water samples such as spring water, tap water, river water, and distilled water. Each of these has different characteristics regarding impurities.

### Step 2: Define Suspended Impurities
Suspended impurities are particles that are not dissolved in water and can include dirt, silt, and other particulate matter. Water that is free from these impurities is considered clean or pure.

### Step 3: Analyze Spring Water
Spring water originates from underground sources and flows naturally to the surface. It is typically filtered through layers of soil and rock, which helps remove many impurities. Therefore, spring water is often considered to be free from suspended impurities.

### Step 4: Analyze Tap Water
Tap water is treated water that comes from municipal sources. While it is generally safe to drink, it may still contain some impurities due to the treatment process or from the pipes it travels through. Thus, tap water may not be totally devoid of suspended impurities.

### Step 5: Analyze Other Water Samples
- **River Water**: This type of water usually contains various suspended impurities like dirt, algae, and other organic materials.
- **Distilled Water**: This water is produced by boiling water and then condensing the steam back into a liquid. This process removes most impurities, including suspended particles, making distilled water very pure.

### Conclusion
Based on the analysis, the water sample that is totally devoid of suspended impurities is **spring water**. Distilled water is also free from suspended impurities, but it wasn't mentioned in the original question.

### Final Answer
**Spring water** is the water sample that is totally devoid of suspended impurities.

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