Given below are two statements. $$\bullet$$ Statement I : In CuSO4 . 5H2O, Cu-O bonds are present. $$\bullet$$ Statement II : In CuSO4 . 5H2O, ligands coordinating with Cu(II) ion are O-and S-based ligands. In the light of the above statements, choose the correct answer from the options given below.

Given below are two statements : Statement I : [Ni(CN)4]2$$-$$ is square planar and diamagnetic complex, with dsp2 hybridization for Ni but [Ni(CO)4] is tetrahedral, paramagnetic and with sp3-hybridication for Ni. Statement II : [NiCl4]2$$-$$ and [Ni(CO)4] both have same d-electron configuration have same geometry and are paramagnetic. In light the above statements, choose the correct answer from the options given below :

Arrange the following coordination compounds in the increasing order of magnetic moments. (Atomic numbers : Mn = 25; Fe = 26) A. [FeF6]3$$-$$ B. [Fe(CN)6]3$$-$$ C. [MnCl6]3$$-$$ (high spin) D. [Mn(CN)6]3$$-$$ Choose the correct answer from the options given below :

Which of the following will have maximum stabilization due to crystal field?

Which statement is not true with respect to nitrate ion test?

Transition metal complex with highest value of crystal field splitting ($$\Delta$$0) will be :

Match List - I with List - II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List - I List -II (A) $$[PtC{l}_4{]}^{2-}$$ (I) $$s{p}^{3}d$$ (B) $$Br{F}_5$$ (II) $$d^{2}s{p}^3$$ (C) $$PC{l}_5$$ (III) $$ds{p}^2$$ (D) $$[Co(N{H}_3{)}_6{]}^{3+}$$ (IV) $$s{p}^3{d}^2$$ Choose the most appropriate answer from the options given below :

Correct formula of the compound which gives a white precipitate with BaCl2 solution, but not with AgNO3 solution, is :

The correct order of energy of absorption for the following metal complexes is : A : [Ni(en)3]2+ , B : [Ni(NH3)6]2+ , C : [Ni(H2O)6]2+

The metal complex that is diamagnetic is (Atomic number: $$\mathrm{Fe},26;\mathrm{Cu},29)$$

Low oxidation state of metals in their complexes are common when ligands :

$${\mathrm{Fe}}^{3+}$$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-fymr{border-color:inherit;font-weight:bold;text-align:left;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List - I (Complex) List - II (Hybridization) (A) $$Ni(CO{)}_4$$ (I) $$s{p}^3$$ (B) $$[Ni(CN{)}_4{]}^{2-}$$ (II) $$s{p}^3{d}^2$$ (C) $$[Co(CN{)}_6{]}^{3-}$$ (III) $$d^{2}s{p}^3$$ (D) $$[Co{F}_6{]}^{3-}$$ (IV) $$ds{p}^2$$ Choose the correct answer from the options given below :

Octahedral complexes of copper(II) undergo structural distortion (Jahn-Teller). Which one of the given copper (II) complexes will show the maximum structural distortion? (en - ethylenediamine; $${\mathrm{H}}_2{\mathrm{N}}_{-}{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{NH}}_2$$)

The solubility of AgCl will be maximum in which of the following?

A student needs to prepare a buffer solution of propanoic acid and its sodium salt with pH 4. The ratio of {{[C{H_3}C{H_2}CO{O^ - }]} \over {[C{H_3}C{H_2}COOH]}} required to make buffer is ___________. Given : $$K_a(C{H}_{3}C{H}_{2}COOH)=1.3\times 10^{-5}$$

The Ksp for bismuth sulphide (Bi2S3) is 1.08 $$\times$$ 10$$-$$73. The solubility of Bi2S3 in mol L$$-$$1 at 298 K is :

Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : The amphoteric nature of water is explained by using Lewis acid/base concept. Reason R : Water acts as an acid with NH3 and as a base with H2S. In the light of the above statements choose the correct answer from the options given below :

$$20\mathrm{mL}$$ of $$0.1\mathrm{M}{\mathrm{NH}}_4\mathrm{OH}$$ is mixed with $$40\mathrm{mL}$$ of $$0.05\mathrm{M}\mathrm{HCl}$$. The $$\mathrm{pH}$$ of the mixture is nearest to : (Given : $${\mathrm{K}}_{\mathrm{b}}\left({\mathrm{NH}}_4\mathrm{OH}\right)=1\times 10^{-5},\log 2=0.30,\log 3=0.48,\log 5=0.69,\log 7=0.84,\log 11=1.04)$$

$$K_{a_1}$$, $$K_{a_2}$$ and $$K_{a_3}$$ are the respective ionization constants for the following reactions (a), (b) and (c). (a) {H_2}{C_2}{O_4} \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over {\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {H^ + } + H{C_2}O_4^ - (b) H{C_2}O_4^ - \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over {\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {H^ + } + {C_2}O_4^{2 - } (c) {H_2}{C_2}O_4^{} \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over {\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} 2{H^ + } + {C_2}O_4^{2 - } The relationship between $$K_{a_1}$$, $$K_{a_2}$$ and $$K_{a_3}$$ is given as :