The only cations present in a slightly acidic solution are $Fe^{3+}$,$Zn^{2+}$,and $Cu^{2+}$. The reagent that,when added in excess to this solution,would identify and separate $Fe^{3+}$ in one step is
- A$2 \ M \ HCl$
- B$6 \ M \ NH_3$
- C$6 \ M \ NaOH$
- D$H_2S$ gas
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Similar Questions
Given the circle $C$ with the equation $x^2+y^2-2x+10y-38=0$. Match the List-$I$ with the List-$II$ given below concerning $C$.
$A$. The equation of the polar of $(4, 3)$ with respect to $C$ $I$. $y + 5 = 0$ $B$. The equation of the tangent at $(9, -5)$ on $C$ $II$. $x = 1$ $C$. The equation of the normal at $(-7, -5)$ on $C$ $III$. $3x + 8y = 27$ $D$. The equation of the diameter passing through $(1, -5)$ and $(1, 3)$ $IV$. $x = 9$
| $A$. The equation of the polar of $(4, 3)$ with respect to $C$ | $I$. $y + 5 = 0$ |
| $B$. The equation of the tangent at $(9, -5)$ on $C$ | $II$. $x = 1$ |
| $C$. The equation of the normal at $(-7, -5)$ on $C$ | $III$. $3x + 8y = 27$ |
| $D$. The equation of the diameter passing through $(1, -5)$ and $(1, 3)$ | $IV$. $x = 9$ |
If $a = \frac{1-i \sqrt{3}}{2}$,then the correct matching of List-$I$ with List-$II$ is:
List-$I$ List-$II$ $(i) \ a \bar{a}$ $(A) -\frac{\pi}{3}$ $(ii) \ \arg \left(\frac{1}{\bar{a}}\right)$ $(B) -i \sqrt{3}$ $(iii) \ a-\bar{a}$ $(C) \frac{2i}{\sqrt{3}}$ $(iv) \ \operatorname{Im}\left(\frac{4}{3a}\right)$ $(D) 1$ $(E) \frac{\pi}{3}$ $(F) \frac{2}{\sqrt{3}}$
| List-$I$ | List-$II$ |
| $(i) \ a \bar{a}$ | $(A) -\frac{\pi}{3}$ |
| $(ii) \ \arg \left(\frac{1}{\bar{a}}\right)$ | $(B) -i \sqrt{3}$ |
| $(iii) \ a-\bar{a}$ | $(C) \frac{2i}{\sqrt{3}}$ |
| $(iv) \ \operatorname{Im}\left(\frac{4}{3a}\right)$ | $(D) 1$ |
| $(E) \frac{\pi}{3}$ | |
| $(F) \frac{2}{\sqrt{3}}$ |
What is the minimum quantity (in grams) of $methyl$ iodide required for preparing one mole of ethane by Wurtz reaction? (Atomic weight of iodine $= 127$)
In the Compton scattering process,the incident $X$-radiation is scattered at an angle of $60^{\circ}$. The wavelength of the scattered radiation is $0.22 \ \mathring{A}$. The wavelength of the incident $X$-radiation in $\mathring{A}$ units is:
If $2x + 3y = 5$ is the perpendicular bisector of the line segment joining the points $A\left(1, \frac{1}{3}\right)$ and $B$,then $B$ is equal to
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