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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2006
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Q)

Which of the following pairs constitutes a buffer:-


( A ) $HNO_2\;and\;NaNO_2$
( B ) $HCl\;and\;KCl$
( C ) $HNO_3 \;and\; NH_4 NO_3$
( D ) $NaOH \;and\; NaCl$

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