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- Water is colorless and tasteless liquid. The molecules of water have extensive hydrogen bonds resulting to unusual properties in the condensed form.
- Water reacts with a lot of substances to form different compounds.
Posted by Pritam Awale 6 years, 1 month ago
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Car is an example of a non-living thing that shows two characteristics of living things. A car can move from one place to another. Also, it requires energy just like living things.
Posted by Himanshi Sharma 6 years, 1 month ago
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Cotton wool remains fluffy because of air trapped in it. When a lump of cotton wool is dipped in water, the air goes out of the lump. Due to this, the cotton wool shrinks when dipped in water.
Posted by Aarti Kumari 6 years, 1 month ago
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- Fishes found in oceans, rivers, lakes, aquarium etc.
- Fish locomotion is swimming in water. Body of fish is slimmer than the middle portion, it is called tapered ends and this shape is called streamlined body.
- This type of shape allows the fish to move easily in the water.
- Fishes has well-arranged skeleton covered with strong muscles.
- Fishes swims by moving its body and tail in opposite direction to each other, they stretch the body and relaxing the tail in opposite direction this forms a curve, then quickly the body moves other side and the tail on the opposite this creates the jerk and pushes the fish in forward direction.
- This movement is helped by the fins present on tail and also the fins presents on body helps to balance the body while swimming.
Posted by Aakash Kumar 6 years, 1 month ago
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Posted by Anil Prajapat 6 years, 1 month ago
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No, garbage disposal is not only the responsibility of the government. It is our responsibility as well. It is our duty to keep our environment clean. Along with government and local municipal corporation, we all should throw garbage at proper place. We should think about reuse of waste, so that they can be recycled before throwing them.
Posted by Sangita Salunke 6 years, 1 month ago
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When an object is placed in path of light, a dark portion is formed on the opposite side of object. This dark portion is shadow.
Posted by Chetana Jain 6 years, 1 month ago
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Posted by Gupta Sakshi Gupta 6 years, 1 month ago
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Luminous Objects are objects which exhibit light in their own.
Examples: - Sun, flame of a burning candle
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A closed path through which the electric current flows is called an electric circuit. The direction of electric current in an electric circuit is from the positive terminal to the negative terminal. This is opposite to the direction of flow of electrons; which is from the negative terminal to the positive terminal.
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- Magnets are used inside TVs, Sound speakers and radios. The small coil of wire and a magnet inside a speaker transforms the electronic signal to sound vibrations.
- Magnets are used inside a generator to transform mechanical energy to electrical energy where there are other kinds of motors which use magnets to change electrical energy to mechanical energy.
- Electrically charged magnets can help cranes to move large metal pieces.
- Magnets are used in filtering machines which separates metallic ores from crushed rocks.
- It is also used in food processing industries for separating small metallic pieces from grains etc.
- Magnets are used in MRI machines which are used to create an image of the bone structure, organs, and tissues. Even magnets are used to cure cancer.
- At home, you use magnets when you stick a paper on the refrigerator in order to remember something. Attaching a magnetic bottle opener to the fridge can come in handy.
Posted by Rajpal Kaur 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
| Reversible changes | Irreversible changes |
| A substance can return to its original state. | A substance cannot return to its original state. |
| The chemical properties of the substance do not change. | The chemical properties of the substance change. |
| Most physical changes are reversible changes. | All chemical changes are irreversible changes. |

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Meghna Thapar 6 years ago
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