What is a fuel class 8?

Fuels are substances that produce heat and light energy on burning. For e.g. Wood, Coal, Cow dung cakes, Kerosene, LPG etc. are used as fuel for cooking and heating.

What is fuel short answer?

Fuel: The substances which on burning produce heat energy are called fuels.

What is a fuel Class 8 Ncert?

Answer: A substance which on burning produces heat energy is called a fuel.

What is fuel Class 8 long answer?

Answer: Those substances which provide energy on burning are called 'fuels'; e.g., coal, petroleum, LPG, etc.

What is a fuel Ncert?

It is also called a fuel. The fuel may be solid, liquid or gas. Sometimes, light is also given off during combustion, either as a flame or as a glow. In the reactions mentioned above magnesium and charcoal are combustible substances. © NCERT.

Class 8 Science Combustion and Flame - What is Fuel? - LearnFatafat

What is a fuel class 6?

The material which are burned to produce heat energy are called Fuels. In simple words- Substance which can burn in air is called combustible substance. Example. Coal, LPG, Kerosene, Diesel, Petrol are fuels.

What is a fuel in chemistry?

A fuel is any compound which has stored energy. Combustion is burning a fuel in oxygen, which gives out heat energy and is called an exothermic reaction. Our main source of fuel is from fossil fuels. Chemistry. Fuels and hydrocarbons.

What is a fuel for Class 4?

Class 4 includes mainly industrial oils and greases, fuels and illuminants. This Class includes, in particular: - oils for the preservation of masonry or of leather; - raw wax, industrial wax; - electrical energy; - motor fuels, biofuels; - non-chemical additives for fuels; - wood for use as fuel.

What is fuel by BYJU's?

In other words, any substance which upon combustion produces a usable amount of energy is known as fuel. Example: fossil fuels, biogas, nuclear energy, etc.

What is fuel and its types?

Fuel meaning: Meaning of fuel is a substance that is burned to provide nuclear energy, heat or power. Materials like coal, wood, oil, or gas can provide heat when burned. Methanol, Gasoline, Diesel, Propane, Natural gas, Hydrogen are types of fuel. Nuclear energy is produced by burning plutonium.

What is meant by fuel and combustion?

Combustion is a complex series of chemical reactions, but from a physical standpoint may be described as the rapid combination of oxygen with a fuel, such as natural gas or wood, resulting in the release of heat. Most fuels contain carbon and hydrogen, and the oxygen usually comes from air.

What do you mean by fuel class 10?

The materials which are burnt to produce heat energy are known as fuels. Examples of fuels are: Diesel and Petrol. Fuels are the concentrated store-house of energy. This energy is released in the form of heat when the fuels are burnt.

What is coal gas Class 8 Short answer?

(3) Coal Gas: Coal gas is mainly a mixture of hydrogen, methane and carbon monoxide. The gases present in coal gas are combustible and hence, it is an excellent fuel. It has high calorific value.

What is called fuel?

A fuel is any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work.

What is a fuel Class 5 answer?

Answer: (1) Food (2) domestic (3) kerosene (4) CNG (5) diesel (6) renewable.

What are fuel for kids?

A fuel is a substance that is changed in some way to produce heat, electricity, or other forms of energy. This is usually by being burnt, although there are exceptions, such as nuclear fuel. Fuel can be divided into two main types: fossil fuels and other fuels.

What is a fuel give example?

(a) Any substance which upon combustion produces a usable amount of energy is known as fuel. For example wood, coal, biogas, LPG, petrol, diesel etc.

What is a good fuel *?

A good fuel is one that have high calorific value and low ignition temperature, calorific value is the total energy that the fuel will give out while ignition temperature refers to the minimum temperature to be provided to fuel that it will start combustion.

What is the best fuel answer?

Higher the heating value or higher the calorific value better the fuel is, so kerosene has a higher heating value which is measured by bomb calorimeter.

What is fuel efficiency class 8?

Fuel efficiency of a fuel depends on its calorific value. The calorific value of a fuel depends on the amount of heat produced by the complete combustion of 1 kg of the fuel. The unit used to measure the calorific value of a fuel is kilojoule per kg (kJ/kg).

What is fuel used for?

Fuels are dense repositories of energy that are consumed to provide energy services such as heating, transportation and electrical generation. Even though most fuels ultimately get their energy from the sun (see energy conservation) they are usually considered to be a primary energy source.

What makes a fuel fuel?

A fuel is any compound that has stored energy. This energy is captured in chemical bonds through processes such as photosynthesis and respiration. Energy is released during oxidation. The most common form of oxidation is the direct reaction of a fuel with oxygen through combustion.

What is fuel in fire triangle?

In order for a fire to start there must be a material to burn – and this is referred to as the fuel. Fuel is any kind of combustible material, including paper, oils, wood, gases, fabrics, liquids, plastics and rubber.

Who discovered fuel?

Modern. Chemist James Young noticed a natural petroleum seepage in the Riddings colliery at Alfreton, Derbyshire from which he distilled a light thin oil suitable for use as lamp oil, at the same time obtaining a more viscous oil suitable for lubricating machinery.

What is solid fuel?

Common examples of solid fuels include wood, charcoal, peat, coal, hexamine fuel tablets, dry dung, wood pellets, corn, wheat, rye, and other grains. Solid fuels are extensively used in rocketry as solid propellants.