Which statement justifies that phosphine (ph3) is a polar molecule?

the p-h bond is nonpolar and the molecule is asymmetric.
the p-h bond is nonpolar and the molecule is symmetric.
the p-h bond is polar and the molecule is asymmetric.
the p-h bond is polar and the molecule is symmetric.
the p-h bond is polar and the charges are distributed e

The P-H bond is polar and the molecule is asymmetric.

Non-polar bonds cannot produce polar molecules and symmetric bonds result in even distribution of charge, so no net charge is observed.

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.