In a qualitative analysis, $\mathrm{Bi}^{3+}$ is detected by appearance of precipitate of $\mathrm{BiO}(\mathrm{OH})(\mathrm{s})$. Calculate pH when the following equilibrium exists at 298 K .
$$ \mathrm{BiO}(\mathrm{OH})(\mathrm{s}) \rightleftharpoons \mathrm{BiO}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}), \mathrm{K}=4 \times 10^{-10} $$
(Given : $\log 2=0.3010$ )
8.714
4.699
5.286
9.301
The correct statement with regard to the secondary structure of DNA/RNA is
RNA possesses a single strand helix structure and contains thymine as one of the four bases
DNA possesses a double strand helix structure and contains thymine as one of the four bases
RNA possesses a double strand helix structure and contains uracil as one of the four bases
DNA possesses a single strand helix structure and contains uracil as one of the four bases
The pair of molecules that are metamers among the following is :
$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{OH}$ and $\mathrm{CH}_3-\mathrm{CH}(\mathrm{OH})-\mathrm{CH}_3$
$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_3$ and $\left(\mathrm{CH}_3\right)_2 \mathrm{CHCH}_2 \mathrm{CH}_3$

$$ \mathrm{CH}_3 \mathrm{OCH}_2 \mathrm{CH}_2 \mathrm{CH}_3 \text { and } \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OCH}_2 \mathrm{CH}_3 $$
$$ \text { Match List I with List II : } $$
| List-I (Complex) |
List-II (Type of isomerism) |
||
|---|---|---|---|
| A. | $$ \left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right] $$ |
I. | Optical |
| B. | $$ \left[\mathrm{Co}(\mathrm{en})_3\right]^{3+} $$ |
II. | Solvate |
| C. | $$ \left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{NO}_2\right] \mathrm{Cl}_2 $$ |
III. | Geometrical |
| D. | $$ \left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3 $$ |
IV. | Linkage |
Choose the correct answer from the options given below :
A-III, B-I, C-II, D-IV
A-I, B-III, C-II, D-IV
A-II, B-IV, C-III, D-I
A-III, B-I, C-IV, D-II
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