Which of the following statements is not correct?

Question

$\begin{array}{1 1}\text{Carbon dioxide is a linear molecule with no dipole moment}\\\text{Carbon dioxide and silicon dioxide have the same structures}\\\text{Carbon dioxide is a gas whereas silicon dioxide is solid}\\\text{In carbon dioxide,a double bond exists in carbon and oxygen whereas in silicon dioxide each silicon-oxygen bond is linked through a single sigma bond}\end{array}$