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Posted by Rajasekhar Ganta 6 years, 5 months ago
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Posted by Rutvik Chauhan 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
Thermoplastics can be softened by heat . In thermoplastics, the long polymer chains are not cross-linked with one another . Due to this, on heating, the individual polymer chains can slide over one another and thermoplastic material becomes soft and ultimately melts.
Posted by Pooja Pooja 6 years, 5 months ago
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Posted by Pooja Singh 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
Cytoplasm is a thick jelly-like fluid inside the cell membrane. Nearly 80% of the cytoplasm is water. It occupies the space between the cell membrane and the nucleus. All the life functions take place in the cytoplasm. There are many small cytoplasmic bodies in cytoplasm. These are called cell Organelles. All organelles in cytoplasm play an active role in the functioning of the cell.
Posted by Usman Gani 6 years, 5 months ago
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Posted by C Roy 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
Forces that act on a body directly or through a connector are called contact forces., e.g., muscular force, frictional force, mechanical force, etc.
Forces which do not make direct contact with a body but act through space are called non-contact forces, e.g., gravitational force, electric force, magnetic force, etc.
Posted by Daksh Malviya 6 years, 5 months ago
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Bharadhwaj Balaji 6 years, 5 months ago
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Bharadhwaj Balaji 6 years, 5 months ago
Posted by Beerinder Singh 6 years, 5 months ago
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Posted by Ashwin Jena 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
Phosphorus is stored in water because phosphorus is very reactive non metal. It catches fire if exposed to air. To prevent the contact of phosphorus with atmospheric oxygen,it is stored in water. Whereas,sodium is very reactive. It reacts vigorously with oxygen and water. A lot of heat is generated in the reaction. It is, therefore,stored in kerosene.
Sodium reacts vigourously with air which prevents it to be stored outside kerosene.
Kerosene is composed of saturated hydrocarbons, with which sodium does not react. It does react rapidly, however, with the water vapor and oxygen in air and therefore must be protected from it in order to remain in elemental form. The following excerpt from an earlier answer to this question, "[sodium] is unsaturated hydrocarbon . Even though sodium is highly reactive it doesn't reacts with oxygen when Na++ is preserved in kerosene. hence," is wrong from beginning to end and should be ignored.
Yogita Ingle 6 years, 5 months ago
your question is wrong actual question question is phosphorous is kept inside water or Sodium is kept inside kerosene
Posted by Priyanka Lohia 6 years, 5 months ago
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Posted by Mayank Kumar 6 years, 5 months ago
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Sia ? 6 years, 5 months ago
Bacteria: Bacteria are single- celled microscopic organisms. They can survive under all types of environment, ranging from ice cold climate to hot springs and deserts to marshy lands. Bacteria always live in colonies. They are of spiral shape or rod shape. Bacteria play important role in our life; some bacteria are useful whereas some other are harmful and cause diseases. Bacteria are involved in making of cheese and pickles. Lactobacillus bacteria promote the formation of curd. Antibiotics are also made from bacteria. Apart from this diseases like tuberculosis and typhoid are caused due to bacteria.
Viruses: Viruses are microscopic infectious agent that acts as non-living outside host cell and inside host cell it becomes living and show reproduction. It can affect all kind of organism including animals, plants and bacteria. Common ailments like cold, coughs and influenza (flu) are caused by viruses; serious diseases like chicken pox and polio are also caused by viruses.
Yogita Ingle 6 years, 5 months ago
S.N. |
Characteristics |
Bacteria |
Viruses |
| 1 | Size | Larger (1000 nm) | Smaller (20-400 nm) |
| 2 | Cell Wall | Peptidoglycan or Lipopolysaccharide | No cell wall. Protein coat present instead. |
| 3 | Ribosomes | Present | Absent |
| 4 | Number of cells | One cell (Unicellular) | No cells |
| 5 | Living/Non-Living | Living organisms | Between living and non-living things. |
| 6 | DNA and RNA | DNA and RNA floating freely in cytoplasm. | DNA or RNA enclosed inside a coat of protein. |
| 7 | Infection | Localized | Systemic |
| 8 | Reproduce | Able to reproduce by itself | Need a living cell to reproduce |
| 9 | Reproduction | Fission- a form of asexual reproduction | Invades a host cell and takes over the cell causing it to make copies of the viral DNA/RNA. Destroys the host cell releasing new viruses. |
| 10 | Duration of illness | A bacterial illness commonly will last longer than 10 days. | Most viral illnesses last 2 to 10 days. |
| 11 | Fever | A bacterial illness notoriously causes a fever. | A viral infection may or may not cause a fever. |
| 12 | Cellular Machinery | Possesses a cellular machinery | Lack cellular machinery |
| 13 | Under Microscope | Visible under Light Microscope. | Visible only under Electron Microscope. |
| 14 | Benefits | Some bacteria are beneficial (Normal Flora) | Viruses are not beneficial. However, a particular virus may be able to destroy brain tumors. Viruses can be useful in genetic engineering. |
| 15 | Treatment | Antibiotics | Virus does not respond to antibiotics. |
| 16 | Examples | Staphylococcus aureus, Vibrio cholerae, etc | HIV, Hepatitis A virus, Rhino Virus, etc |
| 17 | Diseases/Infections | Food poisoning, gastritis and ulcers, meningitis, pneumonia, etc | AIDS, common cold, influenza, chickenpox, etc |
Posted by Nishchay Saluja 6 years, 5 months ago
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Sia ? 6 years, 5 months ago
A federal government is a system that divides up power between a strong national government and smaller local governments.
Posted by Sahib Thind 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
(3y - 1) (2y+5)
= 3y (2y + 5) - 1(2y + 5)
= 6y2 + 15y - 2y - 5
= 6y2 + 13y - 5
So coefficient of y is 13.
Posted by Sadhya Prasad 6 years, 5 months ago
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Posted by Dharambir Kumar 6 years, 5 months ago
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Meghna Thapar 5 years, 10 months ago
The iron object is kept in damp air it gets covered with a red brown flaky substance called rust. This is called rusting of iron. The rusting of iron is a slow continuous process which makes the object useless.
The process of rusting can be represented by the following equation:
<v:stroke endarrow="block">
Iron (Fe) + Oxygen (O2, from the air) + water (H2O) rust (iron oxide Fe2O3)</v:stroke>
Posted by Tanishk Arora 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
Zoos are smaller places providing protection to animals away from their natural environment. While wildlife sanctuaries protect and conserve wild animals in their natural habitats. They are spread in vast areas.
Posted by Aishwarya Singh 6 years, 5 months ago
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Bharadhwaj Balaji 6 years, 5 months ago
Bharadhwaj Balaji 6 years, 5 months ago
Bharadhwaj Balaji 6 years, 5 months ago
Gaurav Seth 6 years, 5 months ago
Three Carnatic wars were fought between 1746 and 1763. These wars were fought between the French and the British troops in India. These wars were fought mainly due to the rivalry that existed between France and Britain in Europe. All teh three Carnatic wars were fought because of various reasons.
Posted by Ramanan Ramanan 6 years, 5 months ago
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Mayank Kumar 6 years, 5 months ago
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Posted by Anu Chadha 6 years, 5 months ago
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Sia ? 6 years, 5 months ago
- Birsa was deeply influenced by many of the ideas that he came in touch with, in his growing-up years.
- His movement was aimed at reforming tribal society.
- He urged the Mundas to give up drinking liquor, clean their village and stop believing in witchcraft and sorcery.
- He talked of a golden age in the past - a Satyug when the Mundas lived a good life, constructed embankments, tapped natural springs, planted trees and practiced cultivation to earn their living.
- They did not kill their brethren and relatives.
- They lived honestly. He wanted to restore their glorious past. Such a vision appealed to the people of the region because they wanted to lead a happy and free life.
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Aishwarya Ramavat 6 years, 5 months ago
0Thank You