1
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-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

A

$x+y=3$

B

$a+b=7$

C

$z=4$

D

$b=1$

2
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The entropy and enthalpy changes for the reaction $\mathrm{CO}(\mathrm{g})+\mathrm{H}_2 \mathrm{O}(\mathrm{g}) \rightleftharpoons \mathrm{CO}_2(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g})$ at 300 K and 1 atm are respectively $-42.4 \mathrm{JK}^{-1}$ and -41.2 kJ . The temperature at which the reaction will go in the reverse direction is

A

761.8 K

B

671.8 K

C

961.8 K

D

971.8 K

3
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The volume of water required to dissolve $0.1 \mathrm{~g} \mathrm{PbCl}_2$ to get a saturated solution (in mL ) is (Given $K_{s p}\left(\mathrm{PbCl}_2\right)=3.2 \times 10^{-8}$; Atomic mass of $\mathrm{Pb}=207 \mathrm{u}$ )

A

150

B

100

C

120

D

180

4
TG EAPCET 2025 (Online) 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

1 mL of " $x$ volume" $\mathrm{H}_2 \mathrm{O}_2$ solution on heating gives 20 mL of oxygen gas at STP. The $(w / v) \%$ corresponding to " $x$ volume" of $\mathrm{H}_2 \mathrm{O}_2$ is

A

3.03

B

6.06

C

9.09

D

30.3

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