Fill in the blanks:
$(1)$ ......... acid is added to perform titrations with $KMnO_4$ and $K_2Cr_2O_7$.
$(2)$ Crystals of potassium dichromate are of ......... color,while crystals of potassium chromate are of ......... color.
$(3)$ The color of $MnO_4^{2-}$ is ......... and the color of $MnO_4^-$ is ......... .
$(1)$ ......... acid is added to perform titrations with $KMnO_4$ and $K_2Cr_2O_7$.
$(2)$ Crystals of potassium dichromate are of ......... color,while crystals of potassium chromate are of ......... color.
$(3)$ The color of $MnO_4^{2-}$ is ......... and the color of $MnO_4^-$ is ......... .
(N/A) $(1)$ Dilute $H_2SO_4$ is used because it does not act as an oxidizing agent itself.
$(2)$ Crystals of potassium dichromate $(K_2Cr_2O_7)$ are orange-red,while crystals of potassium chromate $(K_2CrO_4)$ are yellow.
$(3)$ The color of the manganate ion $(MnO_4^{2-})$ is green,and the color of the permanganate ion $(MnO_4^-)$ is deep purple.
$(2)$ Crystals of potassium dichromate $(K_2Cr_2O_7)$ are orange-red,while crystals of potassium chromate $(K_2CrO_4)$ are yellow.
$(3)$ The color of the manganate ion $(MnO_4^{2-})$ is green,and the color of the permanganate ion $(MnO_4^-)$ is deep purple.
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Zinc forms two important alloys,$(i)$ Brass and $(ii)$ German silver. Metals present in them mainly are
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View SolutionThe oxoanion in which the oxidation state of the central atom is same as its group number in the periodic table is
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View SolutionThe oxoanion which contains all equivalent $M-O$ bonds is:
$(I)$ $CrO_4^{2-}$
$(II)$ $MnO_4^-$
$(III)$ $Cr_2O_7^{2-}$
$(I)$ $CrO_4^{2-}$
$(II)$ $MnO_4^-$
$(III)$ $Cr_2O_7^{2-}$
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View SolutionThe alloy that contains copper and $Zn$ is $x$ and the one that contains copper and $Ni$ is $y$. What are $x$ and $y$ respectively?
Match the following:
List-$I$ List-$II$ $A$. $Co^{2+}$ $I$. Yellow colour $B$. $Fe^{2+}$ $II$. Dark green colour $C$. $Ni^{2+}$ $III$. Blue colour $D$. $Cu^{2+}$ $IV$. Pale green colour $V$. Pink colour
The correct answer is
| List-$I$ | List-$II$ |
|---|---|
| $A$. $Co^{2+}$ | $I$. Yellow colour |
| $B$. $Fe^{2+}$ | $II$. Dark green colour |
| $C$. $Ni^{2+}$ | $III$. Blue colour |
| $D$. $Cu^{2+}$ | $IV$. Pale green colour |
| $V$. Pink colour |
The correct answer is
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