NDA CHEMISTRY QUIZ - 9

A solution is prepared by dissolving 100 mL of Hydrogen peroxide in enough water to make 1000 mL of solution . The concentration of Hydrogen peroxide is 

60 mL of ethyl alcohol was dissolved in 500 mL of water to form  a solution of ethyl alcohol. The percentage by volume of ethyl alcohol in water

A mixture contain 10 g of ethanol , 5 g of NaOH and 2 g of HCl . Mole fraction of NaOH in the mixture is

Percentage composition of solute in terms of mass of a solution obtaining by mixing 100 g of 40 % NaOH and 200 g of 50 % NaOH is

A sample of drinking water was found to be severely contaminated with chloroform (CHCl₃), supposed to be a carcinogen. The level of contamination was 10 ppm (by mass).This in percent by mass is

5 g of urea is dissolved in 200 g of water . The percentage by mass of urea in the solution is 

Which of the following term change with change in temperature ?

The mole fraction of glucose in a aqueous solution containing 20% of glucose by mass is

A solution is prepared by dissolving a certain amount of solute in 100 g of water. The percentage by mass of a solute in a solution is 1.5 . The mass of solute is 

A compound X is yellow in colour and used in black and white photography . The percentage of silver present in compound X is