What will happen if a substance has low ignition temperature?

What will happen if a substance has low ignition temperature?

The substances which have very low ignition temperature and can easily catch fire with a flame are called inflammable substances.

Which fuel has ignition temperature lower than room temperature?

If a fuel has an ignition temperature lower than the average room temperature then it catches fire rapidly without application of external heat. For example white phosphorus is stored under water and sodium is stored under kerosene to avoid spontaneous combustion.

Why should the ignition temperature of the fuel not be below room temperature?

The ignition temperature of an object is the minimum temperature required for the object to ignite (burn, catch on fire). It should not be below room temperature because if it were, the fuel would ignite even without the addition of heat making it very hard to manage.

Does a good fuel have low ignition temperature?

The ignition temperature of the fuel should not be very low. Because if it is very low the fuel will catch fire very easily. Hence the correct answer is C, that is the ignition temperature of an ideal fuel should be neither too high nor too low.

What happens if the temperature of fuel is raised to ignition temperature?

When the fuel is heated by some external means, the rate of exothermic reaction. Above a certain temperature, the rate of heat generation matches or exceeds the rate of heat loss. When this happens, the process becomes self-sustaining and that minimum temperature is called the ignition temperature.

What will happen if the temperature of a fuel is raised to its ignition point?

Ignition temperature is an important property of any fuel because the combustion reaction of the fuel becomes self-sustaining only above this temperature. When the fuel is heated by some external means, the rate of exothermic reaction increases with a corresponding increase in the heat generation rate.

What will happen if the temperature of a fuel is raised to its ignition temperature?

Is ignition temperature equal to room temperature?

An ideal or good fuel should have an ignition temperature above the room temperature, and it cannot be even equal to room temperature because that might also lead the fuel to catch fire easily.

What is difference between LPG and wood?

LPG has a more calorific value of about 55,000 KJ/ kg as compared to the wood. Wood has a less calorific value of about 17,000 to 22,000 KJ/kg as compared to the LPG. LPG has a low value of ignition temperature. Wood has a high value of ignition temperature.

What is ignition temperature of a good fuel?

Ignition temperature should be less than 25°C. Ignition temperature should be equal to the room temperature.

What is ignition temperature Why should an ideal fuel have moderate ignition temperature?

It should burn without giving out any harmful gases, i.e., an ideal is that which does not pollute air on burning by giving out gases. 3. It should have a proper ignition temperature, so that it can be burned easily. The ignition temperature of an ideal fuel shouldneither be too low nor too high.

Which factors affect ignition temperature?

Environmental factors include air flow, surface condition, and availability of oxygen. Both air flow and surface condition may influence the potential for ignition on surfaces of the same temperature. Air flow may affect air/fuel mixture and the time for transfer of heat.

What is ignition and combustion?

Ignition temperature is the lowest temperature at which a substance catches fire. When a substance catches fire at a temperature lower than its ignition temperature is called combustion. 1) Rapid combustion produces flame when a combustible substance is ignited.

What is the unit in which the calorific value of fuel is expressed?

The unit in which the calorific value of a fuel is expressed is kilojoules per kilogram (kJ/kg). Question 8. Explain how CO2 is able to control fires. As CO2 is heavier than oxygen, it forms a blanket around fire, because of which the supply of air is stopped. Men over, it brings down the temperature of the burning substance.

What are the advantages of using LPG as a fuel?

(a) It gives out less carbon dioxide gas, carbon monoxide gas, sulphur dioxide and nitrogen dioxide, which is beneficial as they play crucial role in global warming and acid rain. (b) It leaves behind no residue after its combustion. Question 4. Compare LPG and wood as fuels.

How do you test if something is combustible or non combustible?

Collect some materials like straw, matchsticks, kerosene oil, paper, iron nails,^ stone pieces, glass, etc. Under the supervision of your teacher try to burn each of these materials one by one. If combustion takes place mark the material combustible, otherwise mark it non-combustible (Table 6.1).