TG EAPCET 2025 (Online) 4th May Evening Shift | Redox Reactions Question 1 | Chemistry

100 mL of $0.05 \mathrm{M} \mathrm{Cu}^{2+}$ aqueous solution is added to IL of 0.1 M KI solution. The number of moles of $\mathrm{I}_2$ and $\mathrm{Cu}_2 \mathrm{I}_2$ formed are respectively.

$2.5 \times 10^{-3}, 5 \times 10^{-3}$

$5 \times 10^{-3}, 5 \times 10^{-3}$

$5 \times 10^{-3}, 2.5 \times 10^{-3}$

$2.5 \times 10^{-3}, 2.5 \times 10^{-3}$

TG EAPCET 2025 (Online) 4th May Morning Shift

MCQ (Single Correct Answer)

-0

$$ \begin{aligned} &\text { Consider the following redox reaction in basic medium. }\\ &\begin{aligned} x \mathrm{Cr}(\mathrm{OH})_3+y\left(\mathrm{IO}_3\right)^{-} & +\mathrm{z}(\mathrm{OH})^{-} \rightarrow a\left(\mathrm{CrO}_4\right)^{2-}+b(\mathrm{I})^{-}+\mathrm{c}\left(\mathrm{H}_2 \mathrm{O}\right) \end{aligned} \end{aligned} $$

The incorrect option about it is

$x+y=3$

$a+b=7$

$z=4$

$b=1$

TG EAPCET 2025 (Online) 4th May Morning Shift

MCQ (Single Correct Answer)

-0

What are the products formed when ammonium dichromate is thermally decomposed?

$\mathrm{NO}_2, \mathrm{Cr}_2 \mathrm{O}_3, \mathrm{H}_2$

$\mathrm{N}_2 \mathrm{O}, \mathrm{Cr}_2 \mathrm{O}_3, \mathrm{H}_2 \mathrm{O}$

$\mathrm{N}_2, \mathrm{CrO}_3, \mathrm{H}_2 \mathrm{O}$

$\mathrm{N}_2, \mathrm{Cr}_2 \mathrm{O}_3, \mathrm{H}_2 \mathrm{O}$

TG EAPCET 2025 (Online) 3rd May Evening Shift

MCQ (Single Correct Answer)

-0

In which of the following, oxidation state of nitrogen is lowest?

$\mathrm{NH}_2 \mathrm{OH}$

$\mathrm{NH}_4 \mathrm{Cl}$

$\mathrm{N}_2 \mathrm{H}_4$

$\mathrm{HNO}_2$

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