Ask questions which are clear, concise and easy to understand.
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Deepika Rathi 5 years, 2 months ago
Posted by , , 5 years, 2 months ago
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Deepika Rathi 5 years, 2 months ago
Posted by Md.. Masood Ansari 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Natural Resources: Anything and everything that is available naturally on earth is a natural resource. For example - Hydro energy, solar energy, wind energy etc.
Man-made resources: When humans use natural things to make something new that provides utility and value to our lives, it is called human-made resources. For instance, when we use metals, wood, cement, sand, and solar energy to make buildings, machinery, vehicles, bridges, roads, etc. they become man-made resources.
Human resources: People are a nation's greatest resource. Nature's bounty only becomes significant when people find it useful. It is people with their demands and abilities turn them into resources.
Posted by Md.. Masood Ansari 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Land is used for various purposes; like agriculture, forestry, mining, building houses, roads, industries, etc. Factors which affect the use of land are topography, soil, climate, minerals and availability of water. Human factors also determine the land use pattern. Ownership of land also determines the land use pattern.
Increasing population means there is an ever growing demand for land. But the availability of land is limited. Land degradation, landslides, soil erosion, desertification are the major threats to the environment.
Posted by Soma Sinha 5 years, 3 months ago
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Shivansh Choudhary 5 years, 3 months ago
Posted by Sandesh Anil 5 years, 3 months ago
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Khushi Jaiswal 5 years, 2 months ago
Posted by Akshat Tewari 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
a n s w e r ;
Qu'est ce que un ami serviable veut dire
It means
एक मददगार दोस्त का मतलब क्या होता है
What does a helpful friend mean
Posted by Akshat Tewari 5 years, 3 months ago
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Neeharika Das 5 years, 2 months ago
Posted by Navdeep Guliani 5 years, 3 months ago
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Posted by Bhavishy Raghav 5 years, 3 months ago
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Keerthi B 5 years, 3 months ago
Posted by Shubh Nigam Nigam 5 years, 3 months ago
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Md.. Masood Ansari 5 years, 3 months ago
Gaurav Seth 5 years, 3 months ago
a) The socio-religious reform movements of the 19th century were great pioneers of Indian nationalism. The impact of western education, which led to a rational, humanitarian and scientific approach to life, made the educated Indians realise the need to reform their religion and society. These movements touched almost every segment of Indian society. In the social sphere these movements worked for the abolition of caste system, child marriage, dowry system, purdah system, sati and infanticide. In the religious sphere, these reform movements combated religious superstitions, attacked idolatry, polytheism and hereditary priesthood. These movements fought for individual liberty and social equality.
Prominent reform movements were Brahmo Samaj (founded by Raja Rammohan Roy), Arya Samaj (founded by Swami Dayanand Saraswati), Ramakrishna Mission (founded by Swami Vivekanand) and Satya Shodhak Samaj (founded by Jyotiba Phule.
b) The Press: Newspapers such as the Amrit Bazar Patrika, The Bengali, The Tribune, The Times of India, The Hindu were prominent. Newspapers in vernacular language were also printed. It was through the press that the message of patriotism and modern liberal ideals of liberty, freedom, equality spread among the people. The press daily criticised the unjust policies of the British. It made possible to exchange views among different sections of the Indian society and to organise political movements. It made Indians aware of the political and social development of the outside world and shape their own policies and programmes.
c) Repressive Colonial Policies: The British had conquered India to promote their own interests and therefore , followed such repressive policies so as to make India submissive to the needs of the British.
Lord Lytton introduced the Vernacular Press Act (1878) and the Indian Arms Act. The Vernacular Press Act did not allow vernacular papers to publish any material that might excite a feeling of dissatisfaction against the British government. The Indian Arms Act of 1879 made it a criminal offence for Indians to carry arms without license.
The maximum age limit for the Indian Civil Service examination was reduced from 21 to 19 years, thus making it difficult for the Indians to compete for it.
These repressive policies of the British provided a stimulus to political agitation and quickened the pace of Indian nationalism.
Posted by Rucha Kale 5 years, 3 months ago
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Posted by Amogh Thasale 5 years, 3 months ago
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Chirag Cansal 5 years, 3 months ago
Md.. Masood Ansari 5 years, 3 months ago
Krishna Halwane 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
- Freedom to interpret basically means the liberty to understand and take things however we want to think.
- This means we are allowed to imply or think a certain viewpoint as the meaning behind what has been said.
- It allows people to form their own opinions and develop their own understanding according to how they want.
- It also means there is an open window over how people will form their opinions about a particular issue.
- And it allows people the right to make their own choices and form their own conclusions.
Posted by Pranjal Salgotra 5 years, 3 months ago
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Posted by Noman Shaikh 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Alloys are metal mixtures with other elements, the precise combination of which is governed by the properties required. In general, alloys are considered metallic in nature, i.e. they have good thermal and electrical conductivity.
Examples of alloys are listed below
- Steel
- Nichrome
- Bronze
- Brass
- Duralumin
- Solder
Soundarya More 5 years, 3 months ago
Posted by Noman Shaikh 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Uses of Silicon
- The element is a major constituent in ceramics and bricks.
- Being a semiconductor, the element is put into use for making transistors.
- Silicon is widely used in computer chips and solar cells.
- It is a vital component of Portland cement.
- Silicon is used in the production of fire bricks.
- Several waterproofing systems employ silicones as a component.
- Silicon is used in much mould release agents and moulding compounds.
- It is also a component of ferrosilicon – an alloy widely used in the steel industry.
Uses Of Phosphorus
- There are four forms of phosphorous usually used these days: white, black, red, and violet.
- It’s simple to spot phosphorus at position number fifteen on the periodic table just under nitrogen (N).
- One can also find phosphorus in fireworks, fertilizers, and baking powder.
- Phosphorus also plays a role in the making of steel.
- Phosphates are also used in the production of fine chinaware and special glasses.
Soundarya More 5 years, 3 months ago
Posted by Noman Shaikh 5 years, 3 months ago
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Poornima B 5 years, 2 months ago
Yogita Ingle 5 years, 3 months ago
| These are solids at room temperature except mercury | These exist in all three states |
| These are very hard except sodium | These are soft except diamond |
| These are malleable and ductile | These are brittle and can breakdown into pieces |
| These are shiny | These are non-lustrous except iodine |
| Electropositive in nature | Electronegative in nature |
| Have high densities | Have low densities |
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Our body is composed of almost every natural element found in nature. This is as true for metals as it is for water or carbon.
Metals are elements that are required for several purposes, such as the formation of blood, bones, teeth and other tissues; osmoregulation of body fluids, and the control of physicochemical processes. Some of these metals are only needed in trace amounts.
These metals are generally found in a typical, diverse diet. If a person is low in specific metals, this deficiency can create different types of problems and diseases. Excess metals, caused by supplementation, can also cause health problems.
Posted by Noman Shaikh 5 years, 3 months ago
- 3 answers
Yogita Ingle 5 years, 3 months ago
Here are some ways where we can prevent rusting :
1. Paint it - Paint the metal with any durable acrylic paint. Do not use Water-Soluable paints, since they will only worsen the rust. Rust will form underneath this type of paint.
2. Keep moisture at Bay - Avoid contact with water or moisture. We know that the water has chemical formula which corresponds to 2 parts Hydrogen and 1 part Oxygen. Hence oxygen is responsible for oxidation of iron and therefore forms rust.
3. Coat it with Oil - Use of oil or grease significantly reduces the chances of developing rust in iron. Basically, oil or grease form a protective layer over iron just as paint does and therefore prevent rust formation.
Akshiii ?? 5 years, 3 months ago
Posted by Noman Shaikh 5 years, 3 months ago
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Soundarya More 5 years, 3 months ago
Posted by Noman Shaikh 5 years, 3 months ago
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Priyal Raj 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
2Na + 2H2O → 2NaOH + H2↑
Sodium reacts violently with cold water to form sodium hydroxide solution along with the evolution of hydrogen gas.
Posted by Noman Shaikh 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
The exposure of iron (or an alloy of iron) to oxygen in the presence of moisture leads to the formation of rust. This reaction is not instantaneous, it generally proceeds over a considerably large time frame. The oxygen atoms bond with iron atoms, resulting in the formation of iron oxides. This weakens the bonds between the iron atoms in the object/structure.
The reaction of the rusting of iron involves an increase in the oxidation state of iron, accompanied by a loss of electrons. Rust is mostly made up of two different oxides of iron that vary in the oxidation state of the iron atom. These oxides are:
- Iron(II) oxide or ferrous oxide. The oxidation state of iron in this compound is +2 and its chemical formula is FeO.
- Iron(III) oxide or ferric oxide, where the iron atom exhibits an oxidation state of +3. The chemical formula of this compound is Fe2O3.
Posted by Noman Shaikh 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Some of the physical properties of metals are listed below.
- Shiny (lustrous) in nature
- Metal is a good conductor of electricity and heat
- Density and melting point is high
- Mouldable (Malleable)
- Ductile
- At room temperature, it is in solid form except for mercury
- Opaque
Posted by Sagaldeep Singh 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Augmentative and alternative communication, or AAC, is a term that's used to describe various methods of communication that can help people who are unable to use verbal speech to communicate. AAC methods vary and may be personalized to meet each individual's needs.
Posted by Noman Shaikh 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
A copper bowl loses its lusture because copper is very reactive metal and it reacts with atmospheric oxygen to form copper oxide.
2Cu+O2 --> 2CuO
This cover oxide is impervious and thick which is not lustrous. And copper oxide prevents the metal from rusting and corroding further.
Posted by Noman Shaikh 5 years, 3 months ago
- 2 answers
Rhea Sharma 5 years, 2 months ago
Yogita Ingle 5 years, 3 months ago
Aluminium is the most commonly used and commercially available metal. Its alloys generally that have excellent corrosion resistance, good workability (machinability) and good to excellent weldability, are often used in marine applications (marine grade aluminum).
That is why it is used in building
Posted by Noman Shaikh 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Zinc is coated on iron this process is called galvanisation this is done to avoid rusting of iron/ to save iron from being corroded .
Posted by Noman Shaikh 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
1.Copper is a good conductor of electricity.
2. It is highly ductile.
3. It is readily available due to this it is not much expensive.
This is the reason why the electric wires are made of copper
Posted by Noman Shaikh 5 years, 3 months ago
- 3 answers
Rhea Sharma 5 years, 2 months ago
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