English Medium Class 9 - CBSE Question Bank Solutions for Science

How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?

How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?

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A 5 per cent sugar solution means that :

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A 5 per cent sugar solution means that :

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A 15% alcohol solution means :

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A 15% alcohol solution means :

Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.

Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.

What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?

What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?

A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.

A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.

If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.

If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.

What happens when the temperature of a saturated sugar solution is increased ?

What happens when the temperature of a saturated sugar solution is increased ?

Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.

Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.

State whether the following statement is true or false :

Bread is an example of solid foam.

State whether the following statement is true or false :

Bread is an example of solid foam.