Advertisements
Advertisements
प्रश्न
How will you separate water from mustard oil ?
Advertisements
उत्तर
We will separate water from mustard oil by using a separating funnel. Due to the difference in the densities of the two liquids, mustard oil, being lighter than water, floats over it and forms the upper layer, whereas water forms the lower layer. On opening the stop-cock, the lower layer of water comes out first and is collected in a beaker. Mustard oil is left behind in the separating funnel.
APPEARS IN
संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
A kind of matter which can sublime is
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
Name a liquid which can be classified as a pure substance and conducts electricity.
Name one solid, one liquid and one gaseous non-metal.
What is meant by (i) elements (ii) compounds, and (iii) mixtures ?Write down the names of two elements, two compounds and two mixtures.
Which one of the following is not a metalloid ?
Which of the following does not have a fixed melting point/boiling point ?
What is meant by the concentration of a solution ?
What will happen if a saturated solution is :
- heated
- cooled
21.5 g of sodium chloride dissolves in 60 g of water at 25°C. Calculate the solubility of sodium chloride in water at that temperature.
Which one of the following is not a chemical change ?
What is the difference between colloids and suspensions ?
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
Higher the temperature, the higher the kinetic energy of particles.
Gases do not diffuse very easily.
______ is used for industrial refrigeration and transporting frozen food.
Evaporation is always accompanied by ______ in temperature.
