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    Chemistry
    Grade-10
    Easy

    Question

    Which one of the following is combustible?

    1. Iron nail 
    2. Glass  
    3. Stone pieces  
    4. Paper

    hintHint:

    Combustible substances are such substances that undergo combustion and readily react with oxygen. They burn in air to produce light and heat energy. They possess high enthalpy of combustion and have low ignition temperatures.

    The correct answer is: Paper

      Paper is an example of a combustible.
      • The substances that can catch fire in presence of oxygen and release heat and light energy are referred to as combustible substances.
      • Combustible compounds are defined as those that can be burnt.
      • When these compounds reach a specific temperature, they start to burn; this temperature is known as the ignition temperature.
      • Paper, fossil fuels, petroleum, cooking gas, kerosene, coal, charcoal, wood, leaves, paper, wax, hydrogen gas, ethanol, methane, propane, and propene are a few examples of flammable materials.

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