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Q: The number of gm-mole of the solute per litre of solution is known as-
  • A. Normality
  • B. Molarity
  • C. Molality
  • D. Mole fraction
Correct Answer: Option B - Molarity is defined as the number of moles of solute per litre of solution. It is a common unit of concentration used in chemistry to describe how much of a given substance is present in a specific volume of solution.
B. Molarity is defined as the number of moles of solute per litre of solution. It is a common unit of concentration used in chemistry to describe how much of a given substance is present in a specific volume of solution.

Explanations:

Molarity is defined as the number of moles of solute per litre of solution. It is a common unit of concentration used in chemistry to describe how much of a given substance is present in a specific volume of solution.