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Class 10ScienceChemical Substances – Nature and BehaviourChemical Reactions and EquationsEasy
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In a combustion reaction, fuel reacts with which gas?

Answer and explanation

Correct answer: Oxygen

Combustion is a chemical reaction in which a fuel reacts with oxygen and releases energy, usually as heat and sometimes as light. Thus, oxygen is essential for ordinary burning and option B is correct. Nitrogen is present in air but normally does not support combustion, helium is inert, and chlorine is not the gas required for common fuel combustion.

Related tags

Class 10 ScienceChemical ReactionsCombustionOxygenFuelChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour
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10 more MCQs
  1. 1What is the process called when one or more substances form new substances with different properties?
  2. 2Which of the following observations can be a common sign that a chemical reaction has occurred?
  3. 3What are the substances written on the left side of the arrow in a chemical equation called?
  4. 4What are the substances written on the right side of the arrow in a chemical equation called?
  5. 5Balancing a chemical equation is based on which law?
  6. 6What must be the same on the reactant and product sides of a balanced chemical equation?
  7. 7When two or more reactants combine to form a single product, what type of reaction is it?
  8. 8Calcium oxide reacts with water to form calcium hydroxide. What type of reaction is this?
  9. 9When a compound breaks down into two or more simpler substances, what type of reaction is it?
  10. 10When calcium carbonate is heated, it forms calcium oxide and carbon dioxide. What type of reaction is this?
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