2. Questions Bank
  3. 9th Class
  4. Science
  5. Atoms and Molecules

9th Class Science Atoms and Molecules Question Bank Atoms and Molecules

  • question_answer
    Carbon and oxygen react to produce carbon dioxide. What is the weight of oxygen required to convert \[1.5\,\,g\] of carbon to carbon dioxide?

    A) \[2\,\,g\]            

    B)        \[6\,\,g\]

    C) \[1\,\,g\]            

    D)        \[4\,\,g\]  

    Correct Answer: D

    Solution :

     \[C+{{O}_{2}}\to C{{O}_{2}}\]             \[12\,\,g+32\,\,g=44\,\,g\]             \[1.5\,\,g=?\] \[\therefore \]Weight of oxygen needed             \[=\frac{32\times 1.5}{12}=4\,\,g\]


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