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S(1)interstitial compound have high melt...

`S_(1)`interstitial compound have high melting points, higher than those of pure metals.
`S_(2)` Permanganate titration in presence of hydrochloric acid are unsatisfactory
`S_(3)`: `KmnO_(4)` does not act as an oxidising agent in strong alkaline medium.
`S_(4):KMnO_(4)` On heating in a current of `H_(2)` gives `MnO`

A

`"TTFT"`

B

`TFFT`

C

`"TFTT"`

D

`FFTF`

Text Solution

Verified by Experts

`s_(1)` : Due to strong interatomic forces
`S_(2)`: Some of the hydrochloric acid is oxidised to chlorin and thus we get les volume of `KMnO_(4)` than the actual one.
`S_(3): MnO_(4)^(-)+e^(-) underseto(OH^(-) MnO_(4)^(2-)`
`S_(4): 2KMnO_(4)+5H_(2) to 2KOH+2MnO+H_(2)O`.
Therefore ,(A) option is correct.
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