Can 1000C of charge be possible? Explain.

Dear student,
In what context are you asking that 1000C charge is possible. 
But yes 1000C charge is possible. 
$$\begin{gathered} q=ne \\ 1000= n\times 1.6\times {10}^{-19} \\ so n= \frac{1000}{1.6\times {10}^{-19}} =625 \times {10}^{19} electrons \end{gathered}$$
Your question is not clear and appears to be incomplete. Recheck your question or please be a little specific about the name of the chapter/textbook to which you are referring here so that we can provide you with some meaningful help. Look forward to hearing from you again!
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