
- A

- ✓

- C

- D







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$(i)\, H_3PO_4+H_2O \rightarrow H_3O^+ + H_2PO_4^-$
$(ii)\, H_2PO 4^- + H_2O \rightarrow HPO_4^{2-} + H_3O^+$
$(iii)\, H_2PO_4^-+ OH^- \rightarrow H_3PO_4 + O^{2-}$
In which of the above does $H_2PO_4^-$ act as an acid ?
$(a)$ $AgF$ is soluble and colourless is aqueous medium
$(b)$ For $LiF$ solubility and Melting point both are lower as compair to $NaF$
$(c)$ Solubility of $Rb_2SO_4$ is less as compair to $BaSO_4$
$(d)$ If $AgI$ is added to water colour of water will turned yellow from colourless
$B, C, N, S, O, F, P, Al, Si$
Assertion $A$ : Zero orbital overlap is an out of phase overlap.
Reason $R$ : It results due to different orientation/ direction of approach of orbitals.
In the light of the above statements. Choose the correct answer from the options given below.