Which of the following name-formula comb...

Which of the following name-formula combinations is wrongly matched

Metaphosphoric acid `rarr(HPO_(3))_(n)`

Pyrophosphoric acid `rarrH_(4)P_(2)O_(7)`

Pyrophosphoric acid `rarrH_(4)P_(2)O_(5)`

Orthophosphoric acid `rarrH_(3)PO_(3)`

Text Solution

Verified by Experts

The correct Answer is:

`H_(3)PO_(4)` is orthophosphorous acid (phosphonic acid). Orthophosphoric acid is `H_(3)PO_(4)`. In oxoacids `P`atom is tetrahedrally surrounded by other atoms. All these acids contain one `P=O` and at least one `P-OH` bond.
The oxoacids in which `P` atom has lower oxidation number (less then+5)contains (in addition to`P=O` and `P-OH` bonds)either`P-P` (e.g, in `H_(2)P_(2)O_(6)` or `P-H` (e.g.,in `H_(3)PO_(3)`) bonds but not both.
Oxoacids having `+3` oxidation state tend to disproportionate to higher and lower oxidation states. For example ,orthophosphorous acid(or phosphorus acid)on heating disproportions to give orthophosphrous acid (or phosphoric acid)and phosphine.
`4H_(3)PO_(3)+3H_(3)PO_(4)+PH_(3)`

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Which of the following name formula combinations is not correct ?

`{:(,"Formula","Name"),((1),K_(2)[Pt(CN)_(4)],"Potasium tetracyanoplatinate(II)"):}`

`{:(,"Formula","Name"),((2),[Mn(CN)_(5)]^(2-),"Pentacyanomagnate(II) ion"):}`

`{:(,"Formula","Name"),((3),K[Cr(NH_(3))_(2)Cl_(4)],"Potassium diammine tetrachlorochromate"):}`

`{:(,"Formula","Name"),((4),[Co(NH_(3))_(4)(H_(2)O)I]SO_(4),"Tetraammine aquaiodo cobalt (III) sulphate"):}`

Which of the following features and their source is wrongly matched ?

Judicial review - British Practice

Concurrent list - Australian Constitution

Directive principle - Irish Constitution

Fundamental Rights - US Constitution

Which of the following reactions/product is wrongly matched ?

`Cl_2 + HgO to Cl_2O + HgCl_2. HgO`

`NaClO_3 + H_2C_2O_4 to CIO_2 + CO_2+ Na_2C_2O_4`

`CIO_4 + NaOH to NaClO_3 + H_2O`

`Cl_2O_6 + NaOH to NaClO_3 + NaClO_4 + H_2O`