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Posted by Shreemoyee Sengupta 5 years ago (10208020)
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Posted by Shreemoyee Sengupta 5 years ago (10208020)
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Posted by Suman Kumar 5 years ago (8628827)
- 1 answers
Pintu Jat 5 years ago (10206070)
Posted by Ojasav Sharda 5 years ago (10208523)
- 2 answers
Gaurav Seth 5 years ago (2898529)
FIR stands for First Information Report. The police have to file a FIR whenever a person gives information about a known offence. This information can be given to the police either orally or in writing. A FIR is necessary for the police to begin their investigations into a crime.
The FIR should mention the date, time and place of the offence, details about the offence, including a description of the events. The FIR should also state the name and address of the complainant. There is a prescribed form in which the police register an FIR and it is signed by the complainant. The complainant also has a legal right to get a free copy of the FIR from the police.
Posted by Riyaz Ali 5 years ago (4488022)
- 1 answers
Gaurav Seth 5 years ago (2898529)
What is Amorphous Solid?
An amorphous solid is that in which the constituent particles do not possess a regular three-dimensional arrangement.
Amorphous solids, lacking the three-dimensional long-range order of a <a href="https://byjus.com/chemistry/crystal-structure/" style="box-sizing: border-box; background-color: transparent; color: rgb(115, 173, 33); text-decoration-line: none; user-select: initial !important;">crystalline material</a>, possess a more random arrangement of molecules, exhibit short-range order over a few molecular dimensions, and have physical properties quite different from those of their corresponding crystalline states.
Properties of Amorphous Solids
Amorphous solid are sometimes described as supercooled liquid because their molecules are arranged in a random manner somewhat as in liquid state.
1. Lack of long-range order
Amorphous Solid does not have a long-range order of arrangement of their constituent particles. However, they may possess small regions of orderly arrangement. These crystalline parts of an otherwise amorphous solid are known as crystallites.
2. No sharp melting point
An amorphous solid does not have a sharp melting point but melts over a range of temperatures. For example, glass on heating first softens and then melts over a temperature range. Glass, therefore, can be moulded or blown into various shapes. Amorphous solid does not possess the characteristic heat of fusion.
3. Conversion into crystalline form
Amorphous solid, when heated and then cooled slowly by annealing, becomes crystalline at some temperature. That is why glass objects of ancient time look milky because of some crystallization having taken place.
Examples of Amorphous Solids
Examples of amorphous solids are glasses, ceramics, gels, polymers, rapidly quenched melts and thin-film systems deposited on a substrate at low temperatures. The investigation of amorphous materials is a very active area of research. Despite enormous progress in recent years our understanding of amorphous materials still remains far from complete. The reason is the absence of the simplifications associated with periodicity.
Nonetheless, from a comparison of the properties of materials in crystalline and an amorphous state the essential features of the electronic structure and thereby also macroscopic properties are determined by short-range order. Thus these properties are similar for solids in the amorphous and crystalline state.
Some examples of amorphous solids are glass, rubber, pitch, many plastic etc. Quartz is an example of a crystalline solid which has regular order of the arrangement of SiO4 tetrahedra. If quartz is melted and the melt is cooled rapidly enough to avoid crystallization an amorphous solid called glass is obtained.
Amorphous Solids are Isotropic
Amorphous solids are isotropic. That is, they exhibit uniform properties in all directions. The thermal and electrical conductivities, coefficient of thermal expansion and refractive index of an amorphous solid have the same value in whatever direction the properties are measured.
Any given crystalline solid can be made amorphous by the very rapid cooling of its melt or by freezing its vapour. This does not allow the particles to arrange themselves in a crystalline pattern.. When quartz the crystalline form of SiO2 is melted and then rapidly cooled, an amorphous solid known as quartz glass or silica glass results. This material has the same composition SiO2 but lacks the molecular level orderliness of quartz. Amorphous form of metal alloys are obtained when thin films of melted metal are rapidly cooled. The resulting metallic glasses are strong, flexible and much more resistant to corrosion than the crystalline alloys of the same composition.
Posted by Suman Kumar 5 years ago (8628827)
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Arjun Deshmukh 5 years ago (5403330)
Posted by Suman Kumar 5 years ago (8628827)
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Gaurav Seth 5 years ago (2898529)
Nationalism is the pride one has for their country, values, culture, customs, traditions etc. They love what they are born as and take every opportunity to show their pride with happiness.
Examples may include:
- Mauri people of New Zealand performing the Haka with pride and teaching visitors about Maori culture of their country.
- Indians explaining the Ganga Aarti (prayer near Ganges river in India for everyone’s well being) as a tradition with pride and welcoming visitors to do the same, in Varanasi.
- Ukrainians performing the Gopak dance for an international audience. etc.
Imperialism is when you take that pride and force it down onto others.
For example:
- Britain colonising Asian and African countries
- Arab invaders invading and forceful conversion of the ancient Pharaonic Egypt, ancient Persia etc and then by extension, parts of India
- Belgium’s conquest of Congo
- France’s 19 subjects in Africa
- Spain and Portugal’s brutal annihilation of Latin American cultures.
- Imperial Japan’s capture of China, South Korea and Pacific territories.
Posted by Manan Vasa 5 years ago (9804180)
- 3 answers
Ranger King 5 years ago (10095284)
Sachi Chauhan 5 years ago (9956776)
Posted by Jass . 5 years ago (8492899)
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Gaurav Seth 5 years ago (2898529)
Acetylation is a chemical reaction in which a hydrogen atom is substituted for an acetyl group (CH3C=O group) in a compound. The products formed in acetylation reactions typically have an acetoxy functional group. When the hydrogen atom belonging to an alcohol group replaced with an acetyl group in an acetylation reaction, an ester is formed as the product. For such reactions (where the reactant compound contains free hydroxyl groups), the most commonly used acetylating agent is acetic anhydride.
Posted by Neetu Dedha 5 years ago (10208517)
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Sachin Patil 5 years ago (10052867)
Posted by Veeral Solanki 5 years ago (10180905)
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Posted by Veeral Solanki 5 years ago (10180905)
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Posted by Veeral Solanki 5 years ago (10180905)
- 3 answers
Anay Tripathi 4 years, 9 months ago (8792849)
Posted by Alka Mishra 5 years ago (9090893)
- 1 answers
Posted by Tanushree Raina 5 years ago (9820136)
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Posted by Anshika Meena 5 years ago (10208410)
- 3 answers
Gaurav Seth 5 years ago (2898529)
Mauryan administration was centralised in nature with king as the sole authority of power .This is unlike modern day democratic system where administration is carried out through working of executive ,legislative and judiciary in close co-operation with each other.The administration today is highly decentralized with formation of panchayats ,gram sabhas etc
In judiciary the king was the supreme power he himself was the judge but in modern days judicial system is based on checks and balances where higher courts review function of lower courts and entire authority is not vested in one person.
Revenue system today is complex as earlier land was the major source of revenue during Mauryan times but today with coming up of industries ,advance trade there are many sources of revenue .
Posted by Devansh Shukla 5 years ago (3090100)
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Posted by Priyanshu Karnani 5 years ago (10202304)
- 4 answers
Posted by Soumya Kumari 5 years ago (10208391)
- 1 answers
Gaurav Seth 5 years ago (2898529)
Industrial Revolution means the transformation of industry and economy of a country with quick succession than normal slow rate.
It refers to the great change in the field of industries when the production of goods by hand in the houses were replaced with the help of machines in factories. The transformation of industry and the economy in Britain between the 1780s and the 1850s is called the 'first industrial revolution'.
Posted by Dikshant Chauhan 5 years ago (9479261)
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Posted by Saurabh Kumar 5 years ago (1045785)
- 1 answers
Posted by Rakhi Gupta 5 years ago (9791193)
- 1 answers
Gaurav Seth 5 years ago (2898529)
Trees are our friends.they breathe in carbon dioxide and breath out oxygen. Trees purify the air and make the environment clean and pure.
People always go for picnics to places where there are many trees., so they can enjoy the shade. Especially in summers, it is so very refreshing to sit in in the shade of trees and enjoy the cool breeze.
Trees are useful to us in other ways too. They give us Timber which we use to make our furniture and as firewood. We use timber to build our houses too and we use wood pulpto make paper.
Trees provide us with useful medicines. We get gum from trees and also fruits and vegetables. We get flowers from trees as well as spices.
We should grow trees and plants around our houses and in parks and gardens and also in the open spaces in cities and towns.
School children should be encouraged to plant trees. They can do it either in the school premises or around their houses . They government encourages social forestry. Subsidies are given to those who plant trees.
The festival of "Van Mahotsav" is held every year to encourage people to plant more trees. Trees check environmental pollution. Many social workers have tried and are trying to awaken the conscience of people to the need for more trees.
Do not cut down trees. Rather, plant more and more trees. If each one planted one tree, there would be so many trees today, sufficient enough for us to breath normally
Posted by Heena Yadav 5 years ago (10208307)
- 3 answers
Priti Kumbhar 5 years ago (9528581)
Manav Kumar 5 years ago (10160638)
Posted by Bhavdeepsinh Jadeja 5 years ago (9824392)
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Priyam Kaji 5 years ago (7840214)
Posted by Sajad Dar 5 years ago (6687463)
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Drishty Kamboj 5 years ago (10229495)
Vansh Rana 5 years ago (9279311)
Posted by Miss Tannu 5 years ago (9822899)
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Posted by Nikshay Sharma 5 years ago (1139200)
- 3 answers
Harsh Rathor 5 years ago (10185566)
Jagriti Ashok 5 years ago (9760075)
Posted by Kashish Thakur 5 years ago (10208021)
- 1 answers

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Maheep Singh 5 years ago (10258846)
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