Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Indian Gamer 5 years, 7 months ago
- 1 answers
Gaurav Seth 5 years, 7 months ago
Any substance can conduct electricity only if it has free electrons.
It is true that copper and rubber, both have electrons but copper has free electrons, which are responsible for flow of current and hence, conduct electricity.
Rubber, on the other hand, does not have free electrons and cannot conduct electricity and are called insulators.
Posted by Bijeandra Saini 5 years, 7 months ago
- 1 answers
Meghna Thapar 5 years, 5 months ago
This concept of free energy can be made using magnets or simple motors. The technology of magnets and motors used in generation of power has been around us ever since we started generating electricity using conventional sources of energy. The simplest generator consists of just a coil of wire and a bar magnet. When you push the magnet through the middle of the coil, an electric current is produced in the wire. The current flows in one direction as the magnet is pushed in, and in the other direction as the magnet is removed.
Posted by Sanampreet Singh 5 years, 7 months ago
- 1 answers
ਹਰਜੋਤ ਸਿੰਘ 5 years, 3 months ago
Posted by Akshaya Dharshini 5 years, 7 months ago
- 2 answers
Yogita Ingle 5 years, 7 months ago
Properties of ionic compounds are as follows.
- Ionic compounds are solids and hard due to the strong attracting force between the positive and negative ions. These compounds are generally brittle and break into pieces on application of pressure.
- Ionic compounds have high melting and boiling points because a application of significant amount of energy can break the strong inter-ionic attraction.
- Ionic compounds are soluble in water but insoluble in solvents like kerosene, petrol, etc.
- Conduction of electricity through a solution is possible when there is movement of charged particles. Ionic compounds in the solid state do not conduct electricity because movement of ions in the solid is not possible due to their rigid structure.
- A solution of an ionic compound in water contains ions, which move to the opposite electrodes when electricity is passed through the solution. Ionic compounds conduct electricity in the molten state as in the molten state the electrostatic forces of attraction between the oppositely charged ions overcome due to the heat. Thus, the ions move freely and conduct electricity.
Aditya Upadhyay 5 years, 7 months ago
Posted by Aditya Verma 5 years, 7 months ago
- 1 answers
Gaurav Seth 5 years, 7 months ago
A light ray is refracted (bent) when it passes from one medium to another at an angle and its speed changes. At the interface, it is bent in one direction if the material it enters is denser (when light slows down) and in the other direction if the material is less dense (when light speeds up). Because different wavelengths (colors) of light travel through a medium at different speeds, the amount of bending is different for different wavelengths. Violet is bent the most and red the least because violet light has a shorter wavelength, and short wavelengths travel more slowly through a medium than longer ones do. Because white light is made up of all visible wavelengths, its colors can be separated (dispersed) by this difference in behavior.
Posted by Devadi Tulasi 5 years, 7 months ago
- 3 answers
Bindusar Maurya 5 years, 7 months ago
Aditya Upadhyay 5 years, 7 months ago
Yogesh Thakur 5 years, 7 months ago
Posted by Ajay Gill 5 years, 7 months ago
- 1 answers
Gaurav Seth 5 years, 7 months ago
- There were increasing demands of granting dominion status to India among a certain section of the British polity.
- In India, the freedom movement was in full swing with its demand for swaraj or self-rule spearheaded by the charismatic Gandhi.
- The conferences were based on the recommendation of Muhammad Ali Jinnah to Lord Irwin, the then Viceroy of India and James Ramsay MacDonald, the then British Prime Minister, and the Simon Commission report.
- It was for the first time that the Indians and the British were meeting as ‘equals’. The first conference started on November 12th, 1930.
Posted by Hariharasudhan Sivaumar 5 years, 7 months ago
- 5 answers
Aayush Singh 5 years, 7 months ago
Posted by Chetna Jain 5 years, 7 months ago
- 2 answers
Posted by Ritu Sehgal 5 years, 7 months ago
- 3 answers
Ajay Gill 5 years, 7 months ago
Sandli Thakur✍?✍?(Helping Hand)? 5 years, 7 months ago
Lucifer??Morningstar?? . 5 years, 7 months ago
Posted by Aditya Modi 5 years, 7 months ago
- 0 answers
Posted by Vighnesh Shewale 5 years, 7 months ago
- 1 answers
Ritik Ranjan 5 years, 7 months ago
Posted by S.Darshan S.Darshan 5 years, 7 months ago
- 1 answers
Hariharasudhan Sivaumar 5 years, 7 months ago
Posted by Birandra Bibhakar 5 years, 7 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Chemical energy is energy stored in the bonds of chemical compounds, like atoms and molecules. This energy is released when a chemical reaction takes place. Usually, once chemical energy has been released from a substance, that substance is transformed into a completely new substance. Examples of matter containing chemical energy include: Coal: Combustion reaction converts chemical energy into light and heat. Wood: Combustion reaction converts chemical energy into light and heat. Petroleum: Can be burned to release light and heat or changed into another form of chemical energy, such as gasoline.
Posted by D.N Singh 5 years, 7 months ago
- 1 answers
Gaurav Seth 5 years, 7 months ago
In our daily life, science is useful as below.
- The food you eat.(grown in farms, where fertilizers and pesticides are used, with farm equipments and transported to where you are)
- The cloths you wear.(made of synthetic or natural fibers, colored, made in factories)
- The house you stay in.(made of concrete, which is made of cement)
- The transport you use for moving around (bicycle, motorbike, car, bus, train, ship, airplane etc)
- The medicine you take when you are sick.
- The fire you use for cooking ( started by a match stick and sustained by petroleum based fuel).
- Entertainments you enjoy(movies, music, TV aka technology)
- Electricity.
- Different materials you use in your daily life(metal, wood, plastic you name it, to reach you in its current form, each went through many manufacturing processes.)
- Internet facilities
Posted by Avinash Pathak 5 years, 7 months ago
- 3 answers
Posted by Adesh Lad 5 years, 7 months ago
- 1 answers
Posted by Suyash Nyamgonde 5 years, 7 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Chemical reactions are the processes in which new substances with new properties are formed. Example - When magnesium ribbon is heated, it burns in air to form a white powder called magnesium oxide.
2Mg + O2
2MgO
During a chemical reaction, atoms of one element do not change into those of another element. Only a rearrangement of atoms takes place in a chemical reaction. In a chemical reaction, reactants are transformed into products. The substances which take place in a chemical reaction are called reactants. The new substances produced as a result of chemical reaction are called products.
The method of representing a chemical reaction with the help of symbols and formulae of substances involved in it is called a chemical equation.
Example: Zinc metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas.
This equation is written as: Zn + H2SO4
ZnSO4 + H2
Posted by Badal Dangi 5 years, 7 months ago
- 3 answers
Lokesh Appu 5 years, 7 months ago
Rohan Bahuguna 5 years, 7 months ago
Posted by Vansh 3434 5 years, 7 months ago
- 2 answers
Gaurav Seth 5 years, 7 months ago
Salts are formed by the reaction of acids and base. And a salt contains positive and negative radicals both. On the basis of positive and negative radicals, salts can be categorized into family.
If two salts have same positive or negative radicals, they are called to be of same family.
In other words, if salts formed by the reaction of same acid with different bases, then all salts so formed belong to the same family. On the other hand if salts formed by the reaction same base with different acids, then all salts so formed have same negative radicals, and all such salts are called to be belonged to the same family.
Example:
In Sodium chloride and sodium sulphate, sodium which is positive radical is same in both of the salts. Thus, sodium chloride and sodium sulphate belongs to the sodium family.
Similarly, in sodium chloride and potassium chloride, chloride which is negative radical is same. Thus, sodium chloride and potassium chloride both belong to chloride family.
Posted by Navdeep Saini 5 years, 7 months ago
- 4 answers
Posted by Azim Anshari 5 years, 7 months ago
- 2 answers
Gaurav Seth 5 years, 7 months ago
Equation of line: y =mx+c
m is the slope
Given :
Convert it into the general form given above
Compare it with general form
So, m =
Thus the slope of the given equation is
Posted by Natush Buragohain 5 years, 7 months ago
- 1 answers
Posted by Aditya Kumar 5 years, 7 months ago
- 3 answers
Posted by Riya Shankar 5 years, 7 months ago
- 5 answers
Riya Shankar 5 years, 7 months ago
Posted by Divyansh Kaushik 5 years, 7 months ago
- 3 answers
Posted by Sanjay Singh 5 years, 7 months ago
- 1 answers
Posted by Ritika Swami 5 years, 7 months ago
- 0 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Gaurav Seth 5 years, 7 months ago
India is one of the world's richest countries in, terms of its vast array of biological diversity, and has nearly Eight percent of the total number of species in the world.
There are various physiographic divisions of India like Northern Mountains, plains, deserts, etc which makes it a diverse country. There are variety of flora and fauna available at every different division and in every different climate. The Himalayas which form the northern shield is rich in flora and fauna, while on the other hand in the Western Ghats biodiversity is present at its full bloom. The innumerable kinds of species both animals and plants had made India a rich nation in terms of bio diversity.
1Thank You