Question

Nitrogen in soil is an example for:

• A. True solution
• B. Saturated
• C. Super saturated
• D. Unsaturated

Hint:

Saturated solutions contain the maximum amount of solute that can dissolve at a specific temperature and pressure.

Answer 1

The Correct Option is B

Think of soil like a sponge that can hold only so much water. Once the sponge has soaked up exactly as much as it can hold, it is at its limit, neither dripping extra nor able to take in more.

1. True solution: the sponge analogy is about capacity, not about particle size or clarity, so this label does not match what is being asked.
2. Saturated: a soil holding nitrogen right up to its normal capacity is like the sponge holding exactly as much water as it can, which is the saturated state.
3. Super saturated: this would be like squeezing extra water into an already-full sponge, an unstable state beyond capacity, not what typical soil nitrogen levels represent.
4. Unsaturated: this would be like a sponge that is still dry in places and could soak up more, the opposite of being at capacity.

Since nitrogen in soil sits at the soil's normal holding capacity, like the fully soaked sponge, the correct answer is saturated.

Answer 2

Rank these terms by how much of a system's capacity is filled: unsaturated (below capacity), saturated (right at capacity), super saturated (above capacity). True solution sits outside this ladder entirely, since it describes particle size instead.

1. True solution: this is not part of the capacity ladder at all, so it cannot answer a question about how much nitrogen the soil is holding.
2. Saturated: this rung represents the soil holding nitrogen right up to its normal limit, which is the condition being described.
3. Super saturated: this rung sits above the limit, an unstable excess that soil does not normally maintain.
4. Unsaturated: this rung sits below the limit, meaning capacity remains, which does not match a soil holding its full nitrogen level.

The rung that matches soil holding nitrogen at its normal capacity is saturated, so that is the correct answer.