Please answer fast. I need to write it. Science....
Answers
Explanation:
- rusting of ring means corsion of metal ring
- ex NaCl+H = HCl+Na
- metal oxide
- because it is very expensive than iron and copper
- .......
Answer:
Explanation:
1. A rust ring may form around foreign bodies that contain iron, typically those that are metallic. The salt in tears interacts with the iron in the metal forming rust in the eye just like you see with metal left outdoors in the elements. The reaction begins within 2 to 4 hours of the foreign body embedding in the eye
2. A displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecule. For instance, when Iron is added to a copper sulphate solution, it displaces the copper metal. A + B-C → A-C + B. The above equation exists when A is more reactive than B.
3.When a metal reacts with oxygen, metal oxide forms. The general equation for this reaction is metal + oxygen → metal oxide.
4. Though silver is a very good conductor of electricity still that is not used in electric wiring primarily due to its cost. It's very expensive compared to the widely used wiring material copper. Another reason for not using silver is that it oxidizes easily and tarnishes when it comes in contact with air.
5. Copper is a highly unreactive metal.
6. The partial sterilization of a product, such as milk or wine, to make it safe for consumption and improve its keeping quality.
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A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.
8. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick. Different viruses attack certain cells in your body such as your liver, respiratory system, or blood.
9. Fermentation is the process of converting carbohydrates to alcohol or to organic acids using microorganisms, such as yeasts or bacteria. This process takes place when there are beneficial bacteria present that break down the starch and sugars in the food.
10. Friction acts as a resisting force which is generated , when two solid surfaces slide against one another. Examples :- <> For walking , there is a friction between our shoes / feet . <>There is a friction between the tires of a vehicle and between the road.
11. A non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it.
12. A magnet has a magnetic field around it. The strength of the magnet decides how large the magnetic field would be. ... Thus, a magnet can act from distance