Advertisements
Advertisements
प्रश्न
State four different properties of a compound and a mixture.
Advertisements
उत्तर
| Property | Compound | Mixture |
| Composition | Fixed proportion of elements combined chemically. | Variable proportion of substances physically combined. |
| Properties | Properties are different from the constituent elements. | Properties are a combination of those of the components. |
| Separation | Cannot be separated by physical methods, only by chemical methods. | Can be separated by physical methods. |
| Energy Change | Formation involves a chemical reaction with energy changes. | Formation does not involve a chemical reaction or energy change. |
APPEARS IN
संबंधित प्रश्न
Answer the question put against the following constituents of air:
Nitrogen : Explain its significance for plants and animals.
Define the term Global warming.
Complete and balance the following chemical equation.
\[\ce{HgO ->[heat]}\] ______ + _______
Classify Calcium oxide. Also give a balanced equation to prepare it.
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The percentage of carbon dioxide in the air is between 0.2 to 0.4%.
Name the main component of air.
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
A weather cock shows the ______ in which the air is moving at that place.
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Nitrogen
