BHU PMT BHU PMT (Mains) Solved Paper-2007

  • question_answer

    Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:

    Which of the following carbide can be used to prepare methane by its action with water? (1) Aluminium carbide (2) Beryllium carbide (3) Calcium carbide (4) Silicon carbide

    A)  1, 2 and 3 are correct

    B)  1 and 2 are correct

    C)  2 and 4 are correct

    D)  1 and 3 are correct

    Correct Answer: B

    Solution :

                     \[\underset{alu\min ium\text{ }carbide}{\mathop{A{{l}_{4}}{{C}_{3}}}}\,+6{{H}_{2}}O\xrightarrow[{}]{{}}\] \[2A{{l}_{2}}{{O}_{3}}+\underset{methane}{\mathop{3C{{H}_{4}}}}\,\] \[\underset{beryllium\text{ }carbide}{\mathop{B{{e}_{2}}C}}\,+2{{H}_{2}}O\xrightarrow{{}}2BeO+\underset{methane}{\mathop{C{{H}_{4}}}}\,\] \[\underset{calcium\text{ }carbide}{\mathop{Ca{{C}_{2}}}}\,+{{H}_{2}}O\xrightarrow{{}}Ca{{(OH)}_{2}}+\underset{acetylene}{\mathop{{{C}_{2}}{{H}_{2}}}}\,\]                      \[\underset{silicon\text{ }carbide}{\mathop{SiC}}\,+{{H}_{2}}O\xrightarrow{{}}no\,reaction\]


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