2. Questions Bank
  3. 8th Class
  4. Science
  5. Combustion and Flame

8th Class Science Combustion and Flame Question Bank Combustion and Flame Formative Objective Problems

  • question_answer
    The substance that catches fire spontaneously in presence of air, at room temperature, is

    A)  White Phosphorous      

    B)  Rhombic Sulphur

    C)  Calcium              

    D)  Iron

    Correct Answer: A

    Solution :

      Here, the student is required to identify the chemical which glows in presence of oxygen at room temperature. White phosphorous burns in the presence of air and gives bright light and smoke. The correct answer is A.


You need to login to perform this action.
You will be redirected in 3 sec spinner