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JEE Main levelSingle correct optionDifficulty 2 of 3bn069

Which formula-name pair is correct?

A $NaNO X_{2}$ - sodium nitrate
B $Na X_{2} SO X_{3}$ - sodium thiosulfate
C $KClO X_{3}$ - potassium perchlorate
D $K X_{2} MnO X_{4}$ - potassium manganate

Answer: D

K X_{2} MnO X_{4}

contains

MnO X_{4} X^{2 -}

(Mn

+ 6

), manganate.

NaNO X_{2}

is nitrite,

Na X_{2} SO X_{3}

is sulfite (thiosulfate is

Na X_{2} S X_{2} O X_{3}

) and

KClO X_{3}

is chlorate.

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