Day 74: JEE Mains Chemistry

1. A.
   (A) and (E) only
2. B.
   (B), (C) and (E) only
3. C.
   (C) and (D) only
4. D.
   (C) and (E) only

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1. A.
   $\left\lbrack K \times c^{x + y - 1}x^{x}y^{y} \right\rbrack^{x + y}$
2. B.
   $\left( \frac{K}{c^{x + y - 1}x^{x}y^{y}} \right)^{\frac{1}{x + y}}$
3. C.
   $\left( \frac{c^{x + y - 1}x^{x}y^{y}}{K} \right)^{x + y}$
4. D.
   $\left( \frac{c^{x + y - 1}x^{x}y^{y}}{K} \right)^{\frac{1}{x + y}}$

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1. A.
   $\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ and $\left\lbrack {NiCl}_{4} \right\rbrack^{2 -}$ are diamagnetic and $Ni(CO)_{4}$ is paramagnetic.
2. B.
   $Ni(CO)_{4}$ and $\left\lbrack {NiCl}_{4} \right\rbrack^{2}$ are diamagnetic and $\left\lbrack Ni(CN)_{4} \right\rbrack^{2}$ is paramagnetic.
3. C.
   $Ni(CO)_{4}$ and $\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ are diamagnetic and $\left\lbrack {NiCl}_{4} \right\rbrack^{2 -}$ is paramagnetic.
4. D.
   $Ni(CO)_{4}$ is diamagnetic and $\left\lbrack {NiCl}_{4} \right\rbrack^{2 -}$ and $\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}$ are paramagnetic.

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1. A.
   70,110
2. B.
   65,145
3. C.
   60,25
4. D.
   25,60

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1. A.
   Initial pressure of A is 80 mm Hg
2. B.
   The reaction never goes to completion
3. C.
   Rate constant of the reaction is $1.693{\text{ }\min}^{- 1}$
4. D.
   Partial pressure of A after 10 minute is 40 mm Hg

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