VMMC VMMC Medical Solved Paper-2003

  • question_answer
    Silicons are:

    A)  halo derivatives of alkyl silanes

    B)  tetra alkyl silanes

    C)  hydrolysis product of alkyl halosilanes

    D)  polymers of halosilanes

    Correct Answer: C

    Solution :

    Silicons are polymerised, hydrolysed products of alkyl halosilanes. i.e., \[{{R}_{2}}SiC{{l}_{2}}\xrightarrow[NaOH]{{{H}_{2}}O}{{R}_{2}}Si<_{OH}^{OH}\xrightarrow[{{H}_{2}}O]{}\]                                 \[{{R}_{2}}SIO-\underset{\text{Silicone}}{\mathop{\underset{R}{\overset{R}{\mathop{\underset{|}{\overset{|}{\mathop{Si}}}\,}}}\,}}\,-O-\underset{R}{\overset{R}{\mathop{\underset{|}{\overset{|}{\mathop{Si}}}\,}}}\,-\]


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