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JEE Main levelOne or more correct optionsDifficulty 2 of 3bn061

Select all pairs in which the formula matches the name.

Apotassium chromate - $K X_{2} CrO X_{4}$
Bcalcium hydrogenphosphate - $CaHPO X_{4}$
Cammonium sulfite - $(NH X_{4}) X_{2} SO X_{3}$
Dsodium nitrite - $NaNO X_{3}$

Answer: A, B, C

Chromate is

CrO X_{4} X^{2 -}

, hydrogenphosphate

HPO X_{4} X^{2 -}

(balances

Ca X^{2 +}

one to one) and sulfite

SO X_{3} X^{2 -}

(two

NH X_{4} X^{+}

). Sodium nitrite is

NaNO X_{2}

;

NaNO X_{3}

is the nitrate.

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