MCQ
The oxidation state of phosphorous is ............. in phosphoric acid.
- A+1
- B+3
- C+5
- D-1
Explanation:
The oxidation state of P is +5 in phosphoric acid.
The structure is given below
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$(a)$ $R_2SiO$ is repeating unit of linear silicones
$(b)$ $RSiCl_3$ on hydrolysis followed by dehydration gives linear silicones
$(c)$ Silicones can be used as heat insulator
$(d)$ Silica is soluble in $HF$
The correct statement$(s)$ is/are
${(C{H_3} - C{H_2})_2}CuLi\xrightarrow{{C{H_3} - Cl}}\Pr oduct$

$(h = 6.62 \times 10^{-34} \,Js$ and $c = 3.0 \times 10^8 \,ms^{-1})$