If $p \rightarrow (\sim p \vee q)$ is false,then the truth values of $p$ and $q$ are respectively

In which one of the following do male and female gametophytes not have a free-living independent existence?

Which of the following compounds is not chiral?

When iron sulfide is heated in air,a sulfur oxide $A$ is formed. When $A$ is dissolved in water,it produces an acid. What is the basicity of this acid?

The first,second and third Ionisation energies ($E_1, E_2$ and $E_3$) for an element are $7 \ eV, 12.5 \ eV$ and $42.5 \ eV$ respectively. The most stable oxidation state of the element will be

The electronic configuration of the phosphide ion $(P^{3-})$ is similar to that of: