Wacker Metroark Chemicals QC Chemist Interview Questions and Answers

Questions on basis chemistry and some questions about gdp AI etc. Are aksed so please make sure your basic chemistry is strong.

Q1. How to calculate mole fraction ?
Ans. 
Mole fraction is calculated by dividing the moles of a specific component by the total moles of all components in a mixture.
• Mole fraction = Moles of component / Total moles of all components

• Mole fraction is a dimensionless quantity.

• The sum of mole fractions of all components in a mixture is always equal to 1.

• For example, in a mixture of 2 moles of oxygen and 3 moles of nitrogen, the mole fraction of oxygen would be 2/(
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Q2. How to calculate molarity
Ans. 
Molarity is calculated by dividing the moles of solute by the volume of solution in liters.
• Molarity (M) = moles of solute / liters of solution

• Determine the number of moles of solute present

• Measure the volume of the solution in liters

• Divide the moles of solute by the volume of solution to get the molarity

• For example, if you have 0.5 moles of solute in 1 liter of solution, the molarity would be 0.5 M
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