Day 420: JEE Mains Chemistry

1. A.
   $+ x - y - z$
2. B.
   $x + y + z$
3. C.
   $z - (x + y)$
4. D.
   $- z - (x + y)$

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1. A.
   A-IV, B-I, C-II, D-III
2. B.
   A-IV, B-III, C-I, D-II
3. C.
   A-III, B-I, C-IV, D-II
4. D.
   A-II, B-III, C-IV, D-I

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1. A.
   A, B and C
2. B.
   A, B and D
3. C.
   A and D
4. D.
   B and C

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1. A.
   $E_{\text{cell~}} = E_{\text{cell~}}^{\circ} - \frac{RT}{2\text{ }F}\ln\frac{\left\lbrack {Ag}^{+} \right\rbrack}{\left\lbrack {Mg}^{2 +} \right\rbrack}$
2. B.
   $E_{\text{cell~}} = E_{\text{cell~}}^{\circ} + \frac{RT}{2\text{ }F}\ln\frac{\left\lbrack {Ag}^{+} \right\rbrack^{2}}{\left\lbrack {Mg}^{2 +} \right\rbrack}$
3. C.
   $E_{\text{cell~}} = E_{\text{cell~}}^{\circ} - \frac{RT}{2\text{ }F}\ln\frac{\left\lbrack {Mg}^{2 +} \right\rbrack}{\left\lbrack {Ag}^{+} \right\rbrack}$
4. D.
   $E_{\text{cell~}} = E_{\text{cell~}}^{0} - \frac{RT}{2\text{ }F}\ln\frac{\left\lbrack {Ag}^{+} \right\rbrack^{2}}{\left\lbrack {Mg}^{2 +} \right\rbrack}$

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1. A.
   $B(OH)_{3}$ will precipitate before $A(OH)_{2}$
2. B.
   $A(OH)_{2}$ and $B(OH)_{3}$ will precipitate together
3. C.
   $A(OH)_{2}$ will precipitate before $B(OH)_{3}$
4. D.
   Both $A(OH)_{2}$ and $B(OH)_{3}$ do not show precipitation with ${NH}_{4}OH$

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