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प्रश्न
Define the emulsion. Give one example.
Define emulsion and give an example.
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उत्तर
An emulsion is a colloid in which minute droplets of one liquid are dispersed in another liquid which is not miscible with it. Examples are milk and butter.
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संबंधित प्रश्न
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
Define matter. Give four examples of matter.
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Give reason why copper metal is used for making electric wires.
Give reason why graphite is used for making elecrode in a dry cell.
How would you confirm that a colourless liquid given to your is pure water ?
What is meant by (i) elements (ii) compounds, and (iii) mixtures ?Write down the names of two elements, two compounds and two mixtures.
Draw a flow-chart for the schematic representation of different types of matter.
Which of the following is not an element ?
The elements which normally exist in the liquid state are :
State whether the following statement is true or false :
Bread is an example of solid foam.
Explain what happens when a beam of light is passed through a colloidal solution.
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
How will you separate a mixture containing sand and sugar ?
Write a method to separate a mixture of sand and potash alum.
How is the impurity of iron present in several substances removed in industries ?
How will you separate water from mustard oil ?
Define the term matter.
Define the term matter.
