321249 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) paper acidified with dilute \(\mathrm{H}_{2} \mathrm{SO}_{4}\) turns green when exposed to

321250 \(\mathrm{\mathrm{CrO}_{4}^{-2}}\) (yellow) changes to \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\) at \(\mathrm{\mathrm{pH}=x}\) and vice versa at \(\mathrm{p H=y}\) hence \(\mathrm{\mathrm{x}, \mathrm{y}}\) are

321251 Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

321252 The yellow precipitate formed during the chromyl chloride test is chemically

321253 Read Statement A and Statement B carefully and mark correct option.
Statement A :
Aqueous solution of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) is preferred as a primary standard in volumetric analysis over \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) aqueous solution.
Statement B :
\(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) has a higher solubility in water than \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\).

321249 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) paper acidified with dilute \(\mathrm{H}_{2} \mathrm{SO}_{4}\) turns green when exposed to

321250 \(\mathrm{\mathrm{CrO}_{4}^{-2}}\) (yellow) changes to \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\) at \(\mathrm{\mathrm{pH}=x}\) and vice versa at \(\mathrm{p H=y}\) hence \(\mathrm{\mathrm{x}, \mathrm{y}}\) are

321251 Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

321252 The yellow precipitate formed during the chromyl chloride test is chemically

321253 Read Statement A and Statement B carefully and mark correct option.
Statement A :
Aqueous solution of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) is preferred as a primary standard in volumetric analysis over \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) aqueous solution.
Statement B :
\(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) has a higher solubility in water than \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\).

321249 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) paper acidified with dilute \(\mathrm{H}_{2} \mathrm{SO}_{4}\) turns green when exposed to

321250 \(\mathrm{\mathrm{CrO}_{4}^{-2}}\) (yellow) changes to \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\) at \(\mathrm{\mathrm{pH}=x}\) and vice versa at \(\mathrm{p H=y}\) hence \(\mathrm{\mathrm{x}, \mathrm{y}}\) are

321251 Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

321252 The yellow precipitate formed during the chromyl chloride test is chemically

321253 Read Statement A and Statement B carefully and mark correct option.
Statement A :
Aqueous solution of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) is preferred as a primary standard in volumetric analysis over \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) aqueous solution.
Statement B :
\(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) has a higher solubility in water than \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\).

321249 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) paper acidified with dilute \(\mathrm{H}_{2} \mathrm{SO}_{4}\) turns green when exposed to

321250 \(\mathrm{\mathrm{CrO}_{4}^{-2}}\) (yellow) changes to \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\) at \(\mathrm{\mathrm{pH}=x}\) and vice versa at \(\mathrm{p H=y}\) hence \(\mathrm{\mathrm{x}, \mathrm{y}}\) are

321251 Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

321252 The yellow precipitate formed during the chromyl chloride test is chemically

321253 Read Statement A and Statement B carefully and mark correct option.
Statement A :
Aqueous solution of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) is preferred as a primary standard in volumetric analysis over \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) aqueous solution.
Statement B :
\(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) has a higher solubility in water than \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\).

321249 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) paper acidified with dilute \(\mathrm{H}_{2} \mathrm{SO}_{4}\) turns green when exposed to

321250 \(\mathrm{\mathrm{CrO}_{4}^{-2}}\) (yellow) changes to \(\mathrm{\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}}\) at \(\mathrm{\mathrm{pH}=x}\) and vice versa at \(\mathrm{p H=y}\) hence \(\mathrm{\mathrm{x}, \mathrm{y}}\) are

321251 Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

321252 The yellow precipitate formed during the chromyl chloride test is chemically

321253 Read Statement A and Statement B carefully and mark correct option.
Statement A :
Aqueous solution of \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) is preferred as a primary standard in volumetric analysis over \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) aqueous solution.
Statement B :
\(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) has a higher solubility in water than \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\).