Day 160: JEE Mains Chemistry

1. A.
   $\left\lbrack Co\left( {NH}_{3} \right)_{5}{NO}_{2} \right\rbrack^{2 +}$
2. B.
   $\left\lbrack Co\left( H_{2}O \right)_{6} \right\rbrack^{3 +}$
3. C.
   $\left\lbrack Co\left( {NH}_{3} \right)_{5}Cl \right\rbrack^{+}$
4. D.
   $\left\lbrack Co\left( {NH}_{3} \right)_{5}Cl \right\rbrack^{2 +}$

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1. A.
   1.23 atm
2. B.
   2.46 atm
3. C.
   0.82 atm
4. D.
   1.47 atm

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1. A.
   $3.1,6.2$
2. B.
   $2.3,4.6$
3. C.
   $1.4,2.8$
4. D.
   $1.5,3.0$

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1. A.
   ${Nd}^{3 +}$ and ${Eu}^{3 +}$
2. B.
   ${La}^{3 +}$ and ${Ce}^{4 +}$
3. C.
   ${Nd}^{3 +}$ and ${Ce}^{4 +}$
4. D.
   ${Lu}^{3 +}$ and ${Eu}^{3 +}$

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1. A.
   ${Ti}^{3 +}$
2. B.
   ${Ni}^{2 +}$
3. C.
   ${Mn}^{2 +}$
4. D.
   ${Cr}^{3 +}$

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