Which of the following statement(s) is/are correct?

Ethyne gas is more soluble in acetone than in water.

${\mathrm{CH}}_3\mathrm{F}$ is more polar than  ${\mathrm{CD}}_3\mathrm{F}$ due to deuterium (D) being less electronegative than hydrogen (H).

 

Silyl isocyanate $\left({\mathrm{SiH}}_3\mathrm{NCO}\right)$ is linear in shape while methyl isocyanate $\left({\mathrm{CH}}_3\mathrm{NCO}\right)$ is bent in shape

In ${\mathrm{CH}}_2=\mathrm{C}=\mathrm{C}=\mathrm{C}={\mathrm{CH}}_2,$ the 2H-atoms on one C-atom lie in a plane perpendicular to the plane in which 2H-atoms on other C-atom lie.