MCQ
Product of the reaction is


- ✓

- B

- C

- D








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$(1) Ca_3P_2 + H_2O \to$
$(2)$ ${H_3}P{O_3}\xrightarrow{\Delta }$
$(3) P_4 + NaOH \to$
$(4)$ ${H_3}P{O_4}\xrightarrow{\Delta }$
$(5) HNO_3 + P_4O_{10} \to$
$(6)$ $P_4+HNO_3 \to$
Assertion $A$: $\mathrm{pK}_{\mathrm{a}}$ value of phenol is $10.0$ while that of ethanol is $15.9$.
Reason $R$: Ethanol is stronger acid than phenol.In the light of the above statements, choose the correct answer from the options given below: