We have solved Selina Concise Chemistry Class 10 ICSE Solutions as per ICSE Guidelines. Selina Publishers Chemistry for Class 10 ICSE Solutions are solved step-by-step in order to improve student problem solving skills.
What are the physical properties of ammonia? Ammonia is a covalent compound with the following physical properties: Ammonia is very soluble in water, but it ionises partially in water to form a weak alkali. A 0.1 mol dm-3 ammonia solution has a pH of about 10. Ammonia being alkaline can undergo neutralisation with acids to […]
Justify the uses of synthetic polymers in daily life Synthetic polymers in daily life: Synthetic polymers have been widely used to replace many other building materials such as stones, metals, wood, clay, cotton, wool and natural rubber. Synthetic polymers are very stable. Unlike metals, wood or paper, they do not rust, rot or decay easily […]
What is the Relationship Between Temperature and Pressure? Figure (a) shows a man measuring the pressure of the air in his car tyre before starting on a long journey. After reaching his destination, he measured the pressure again and the pressure gauge showed that the pressure had increased, as shown in Figure (b). He touched […]
How can we measure the strength of acids and alkalis? An acid produces hydrogen ions in aqueous solution. The acidity of a solution is a measure of the concentration of the hydrogen ions in the solution. A base produces hydroxide ions in aqueous solution. The alkalinity of a solution is a measure of the concentration […]
What is the Formula for Specific Heat Capacity? Specific Heat Capacity Figure shows water and cooking oil in similar pots and supplied with heat at the same rate. Which liquid heats up at a faster rate: water or cooking oil? Such a deduction would be difficult to make because the water and cooking oil have […]
Describe Double Circulation in Human Beings Double circulation has two components, pulmonary circulation and systemic circulation. Pulmonary Circulation : It is movement of blood from heart to the lungs and back. Deoxygenated blood of the body enters the righ auricle, passes into righ ventricle which pumps it into pulmonary arch, With the help of two […]
What is meant by Biotic Components in Environment All living things depend on their surroundings for food, water, and shelter. All that surrounds living things and affects their growth and development is called their environment. Both living and non-living things form the environment. Thus, we can say that the environment is made up of two […]
What is Matter and what are the Properties of a Solid, Liquid and Gas Matter: Anything which occupies space and has mass is called matter. Food, water, air, clothes, table, chair, plants and trees. Indian philosophers said that all the matter living or non-living, was made up of five basic elements air, earth, fire, sky and water. On […]
What is meant by a neutralization reaction? The reaction of an acid and a base is called a neutralisation reaction. In this reaction, the acidity of an acid is neutralised by an alkali. At the same time, the alkalinity of the alkali is neutralised by the acid. A salt and water are the only products […]
What is meant by the calorific value of a fuel? Fuels are substances that can normally burn readily in air or oxygen to produce large quantity of heat. Examples of some common fuels are petroleum, natural gas and coal. These are called fossil fuels. Different types of fuels have different heats of combustion. Heat of […]
What do you mean by Total Internal Reflection? The inside surface of water can act like a perfect mirror as shown in Figure. This happens when the light rays strike the surface of the water in such a way that it reflects back into the water. The light rays are said to be reflected internally. […]
Image Formation By Convex Lens in Different Cases Case 1: Object at Infinity A point object lying on the principal axis: Rays come parallel to the principal axis and after refraction from the lens, actually meet at the second principal focus F2. Fig. Convex lens point object at infinity, image at focus. The image is formed […]
The Relationship between Critical Angle and Refractive Index Archives
What are the Advantages and Disadvantages of Synthetic Fibres Advantages of Synthetic Fibres Synthetic fibres have the following advantages. Most synthetic fibres have good elasticity. Most fabrics made of synthetic fibres do not wrinkle easily. Fabrics made of synthetic fibres are generally more durable, less expensive, and more readily available than those made of natural […]
How are the Anode and Cathode rays Produced? Atoms are made up of three subatomic particles electrons, Protons and neutrons. Electron has negative charge, proton has positive charge, whereas neutron has no charge, it is neutral. Protons and neutrons are present in a small nucleus at the centre of the atom. Electrons are outside the […]
What is the enthalpy (heat) of neutralization? Neutralisation is the reaction between an acid and a base to form a salt and water. Some examples of neutralisation reaction are as follows. During neutralisation reaction, hydrogen ions from acid react with hydroxide ions from alkali to form water. H+(aq) + OH–(aq) → H2O(aq) Since water […]
General Properties of Bases Some of the characteristic properties of bases are: Bases are bitter to taste a bitter taste is characteristic of all bases. Bases may or may not be soluble in water Bases that can dissolve in water are called alkalis. Some examples of soluble bases or alkalis are sodium hydroxide, potassium hydroxide, […]
What is the heat of combustion? What is the definition of enthalpy of combustion? Heat of Combustion: A fuel is a chemical substance that burns in oxygen to produce heat energy. Combustion is a chemical reaction between a fuel and oxygen to release heat. Combustion is always an exothermic reaction. The heat of combustion […]
