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Forest fires are a result of which type of combustion?

Forest fires are a result of which type of combustion? Correct Answer Spontaneous

Explanation:

Ignition can be achieved either by heating the system containing a combustible mixture with thermal energy or by creating chain reactions with autocatalytic reactions. Chemical reactions whose reaction rate is controlled by the concentration of initially present reactants are called thermal, whereas reactions whose rate is affected by the concentrations of the intermediate and final products are called autocatalytic.

An important topic in forest fires is determining the condition under which given combustible forest materials can ignite. There are two types of ignition spontaneous (unpiloted) ignition and piloted ignition. Unpiloted ignition can be achieved by raising the temperature of the system with hot boundaries and adiabatic compression. Piloted ignition can be achieved by adding heat to the system with an external heat source. Ignition temperature (explained later) for unpiloted ignition is higher than for piloted ignition. For example, ignition temperature for piloted ignition of cellulose is approximately 350°C, whereas that for unpiloted ignition is approximately 500°C

Other important aspects of ignition related to forest fires include ignition temperature, flammability limits, and minimum ignition energy.

Related Questions

Consider the following statements: 1. As per recent amendment to the Indian Forest Act, 1927, forest dwellers have the right to fell the bamboos grown on forest areas. 2. As per the Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006, bamboo is a minor forest produce. 3. The Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006 allows ownership of minor forest produce to forest dwellers. Which of the statement given above is/are correct?
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Forest fires feed on decades-long accumulations of debris and leap from the tops of young trees into the branches of mature trees. Fires that jump from treetop to treetop can be devastating. In old-growth forests, however, the shade of mature trees keeps thickets of small trees from sprouting, and the lower branches of mature trees are too high to catch the flames. This paragraph best supports the statement that
Forest fires feed on decades-long accumulations of debris and leap from the tops of young trees into the branches of mature trees. Fires that jump from treetop to treetop can be devastating. In old-growth forests, however, the shade of mature trees keeps thickets of small trees from sprouting, and the lower branches of mature trees are too high to catch the flames.
This paragraph best supports the statement that
Consider three software items: Program-X, Control Flow Diagram of Program-Y and Control Flow Diagram of Program-Z as shown below Program-X: Control Flow Diagram of Program-Y sumcal (int maxint, int value) {       int result=0, i=0;       if (value <0)       {           Value = -value;       }       while ( (i