1 gm molar solution is

Options

A. 1 gm mole of solute dissolved in 1000 ml of solvent
B. 1 mole of solute dissolved in 1000 ml of solution
C. 1 gm of solute dissoved in 1000 ml of solvent
D. 1 gm of solute dissoved in 1000 ml of solvent

Answer

To determine what a 1 gram molar solution is, we need to understand the definition of a molar solution and the terminology used.

### Step-by-Step Solution:

1. **Understanding Molarity**:
- Molarity (M) is defined as the number of moles of solute per liter of solution. A 1 molar (1 M) solution contains 1 mole of solute in 1 liter (1000 ml) of solution.

2. **Identifying the Options**:
- We have four options to evaluate:
- A. One gram mole of solute dissolved in 1000 ml of solvent.
- B. One mole of solute dissolved in 1000 ml of solution.
- C. One gram of solute dissolved in 1000 ml of solvent.
- D. One gram of solute dissolved in 1000 ml of solvent.

3. **Analyzing Each Option**:
- **Option A**: This suggests that 1 gram mole (which is equivalent to 1 mole) of solute is dissolved in 1000 ml of solvent. This is incorrect because it refers to the solvent, not the solution.
- **Option B**: This states that 1 mole of solute is dissolved in 1000 ml of solution. This is correct as it aligns with the definition of a molar solution.
- **Option C**: This indicates that 1 gram of solute is dissolved in 1000 ml of solvent. This is incorrect as it does not refer to a mole but rather a gram, which does not define a molar solution.
- **Option D**: This is the same as option C and is also incorrect for the same reason.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option B: One mole of solute dissolved in 1000 ml of solution**.

### Final Answer:
The correct answer is **Option B**: One mole of solute dissolved in 1000 ml of solution.