Question 10 :
The correct name of, $\displaystyle \left [ Ni\left ( DMG \right )_{2} \right ]$ a cherry red precipitate is:
Question 12 :
How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with $ Ca^{2+} $?
Question 13 :
Which of the following compounds have been named correctly according to IUPAC rules: <br/>(a)$[Cr(NH_3)_5CO_3]Cl$   -  Pentamminecarbonatochromium (III) chloride<br/>(b)$[Co(NH_3)_5ONO]Cl_2$  -  Pentammine-O-nitritocobalt (III) chloride<br/>(c)$K_3[Cr(CN)_6]$ -  Potassium hexacyanochromate(III)<br/>(d)$[Co(NH_3)_6]Cl_3$  - Hexamminecobalt (III) chloride<br/>
Question 16 :
The two isomers X and Y with the formula $Cr(H_2O)_5ClBr_2$ were taken for experiment on depression in freezing point. It was found that one mole of X gave depression corresponding to $2$ moles of particles and one mole of Y gave depression due to $3$ moles of particles. The structural formulae of X and Y respectively are:
Question 17 :
When $H_2O$ is shaken with an acidified solution of $K_2Cr_2O_7$ in the presence of ether, the ethereal layer turns blue due to the formation of :
Question 20 :
Which of the following is correct IUPAC name of any complex compound?
Question 21 :
Which of the following primary and secondary valencies are not correctly marked against the compound?
Question 22 :
Select the correct I.U.P.A.C name for $[Ti (\pi - C_5H_5)_2(\sigma - C_5H_5)_2]$.<br/>
Question 24 :
A complex compound of cobalt has molecular formula containing five $NH_{3}$ molecules, one $NO_{2}$ group and two $Cl$ atoms for one $Co$ atom. One mole of this compound produces three moles of ions in aqueous solution. On reacting with an excess of $AgNO_{3}$ solution, two moles of $AgCl$ get precipitated. The ionic formula of the compound is:<br/>
Question 26 :
A complex whose IUPAC name is not correctly written is :<br>
Question 27 :
Which of the following statements are true regarding Werner's theory are true?<br/>$( 1 )$ Ligands are connected to the metal ions by covalent bonds<br/>$( 2 )$ Secondary valencies have directional properties<br/>$( 3 )$ Secondary valencies are non- ionizable<br/>
Question 28 :
Select the correct I.U.P.A.C name for $Mo(\sigma - C_3H_5)(\pi - C_5H_5)(CO)_3$ :<br>
Question 31 :
In the metal carbonyls of the general formula $M{ \left( CO \right)  }_{ x }$ where M = metal, x = 4, EAN rule satisfied for atomic number of M equal to :
Question 33 :
The IUPAC name for the complex $\displaystyle \left [ Co\left ( NH_{3} \right )_{5}\left ( NO_{2} \right ) \right ]Cl_{2}$ is:
Question 38 :
The IUPAC name for the coordination compound $\displaystyle Ba\left [ BrF_{4} \right ]_{2}$ is:
Question 42 :
The $IUPAC$ name of $\displaystyle K_{4}\left [ Fe\left ( CN \right )_{6} \right ]$ is:
Question 43 : <div>The Alsatian-Swiss chemist Alfred Werner pioneered the field of coordination chemistry in the late nineteenth century. At that time, a number of compounds of cobalt (III) chloride with ammonia were known, with general formula $CoCl_3.xNH_3$ $x=3\ to\ 6$<br/>Treatment of these compounds with aqueous HCl acid did not remove the ammonia. However, treatment of the compounds with excess of $AgNO_3$ at 273 K gave white precipitate of AgCl in varying ratio depending on the structure. Also each complex had electrical conductivity of varying nature.</div><div> <br/></div><div>There is no reaction of the compound with aqueous HCl indicating that there is no free $NH_3$. Thus, $NH_3$ ligand is bonded to cobalt(III) by________ .<br/></div>
Question 44 :
A pink coloured salt turns blue on heating. The presence of which cation is most likely?
Question 45 :
A solution containing $2.675$g of $CoCl_3\cdot 6NH_3$ (molar mass $=267.5$ g $mol^{-1}$) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of $AgNO_3$ to give $4.78$g of $AgCl$(molar mass$=143.5$g $mol^{-1}$). The formula of the complex is?
