2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ

JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Self Evaluation Test - Some Basic Concepts of Chemistry

  • question_answer
    What volume of oxygen gas \[({{O}_{2}})\] measured at \[0{}^\circ C\] and 1 atm, is needed to burn completely 1L of propane gas\[({{C}_{3}}{{H}_{8}})\] measured under the same conditions?

    A) 7L                   

    B) 6L  

    C) 5L       

    D) 10L

    Correct Answer: C

    Solution :

    [c] Writing the equation of combustion of propane\[({{C}_{3}}{{H}_{8}})\], we get \[\underset{\begin{smallmatrix}  1\,vol \\  1L \end{smallmatrix}}{\mathop{{{C}_{3}}{{H}_{8}}}}\,+\underset{\begin{smallmatrix}  5vol \\  5L \end{smallmatrix}}{\mathop{5{{O}_{2}}}}\,\to 3C{{O}_{2}}+4{{H}_{2}}O\] From the above equation we find that we need 5 L of oxygen at NTP to completely burn 1 L of propane at N.T.P. If we change the conditions for both the gases from N.T.P. to same conditions of temperature and pressure. The same results are obtained, i.e. 5 L is the correct answer.                 


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