Chromite ore is concentrated by:

1 gram of potassium hydroxide was treated with $20 \mathrm{mL}$ of $0.5 \mathrm{M}$ HCl solution. The mass of potassium hydroxide left unreacted is equal to

What is the molality of a solution where the mole fraction of the solute is 0.02 and the solvent is water?

Which of the following is NOT a method for expressing the concentration of a solution?

Which of the following concentration terms is NOT affected by temperature?

Reactants react in the equal number of …….. to give products.

What weight of ${\rm{HN}}{{\rm{O}}_3}$ is needed to convert $5\,g\,{I_2}$  into ${\rm{HI}}{{\rm{O}}_3},{\rm{HN}}{{\rm{O}}_3} o {\rm{NO}}?$

0.5 grams of sodium hydroxide was treated with $12.5 \mathrm{mL}$ of $0.75 \mathrm{M}$ HCl solution. The mass of sodium hydroxide left unreacted is equal to

1 gram of sodium hydroxide is neutralized with excess hydrochloric acid. If 0.73 g of sodium chloride is formed, what is the percentage yield of the reaction?

Which of the following is used as a depressant in the froth flotation process for separating ZnS and PbS?

The least count of burette used normally in laboratory is :