Question 2 :
Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?
Question 3 : Select the correct order with respect to the basic character of the transition metal monoxides. <div>(Atomic number in amu of $Ti = 22,\ V = 23,\ Cr = 24,\ Fe = 26)$<br/></div>
Question 6 :
Calculate magnetic moment of $Mn$ in $MnO^-_4 $ $ x$ unpaired electrons on $Mn$ in $MnO^-_4\, y$ BM. <br/>$x, \, y$ are respectively:
Question 7 :
Among the following pairs of ions, which pair has a lower oxidation state in aqueous solution more stable than the other?
Question 9 : <div> Consider following complexes :</div><div><br/> I: $[Fe(H_2O)_6]^{2+}$</div><div><br/> II :$[Fe(CN)_6]^{4-}$</div><div><br/> III :$[Ni(CO)_4]$</div><div><br/> IV :$[Ni(H_2O)_4]^{2+}$</div><div><br/> V :$[Ni(CN)_4]^{2-}$</div><div><br/> Out of this, select the complex with m aximum number of unpaired electrons.</div>
Question 11 :
Iron exhibits +2 and +3 oxidation states. Which of the following statements about iron is incorrect?
Question 12 : <div> Consider following complexes :</div><div><br/> I: $[Fe(H_2O)_6]^{2+}$<br/> II :$[Fe(CN)_6]^{4-}$<br/> III :$[Ni(CO)_4]$<br/> IV :$[Ni(H_2O)_4]^{2+}$<br/> V :$[Ni(CN)_4]^{2-}$</div><div><br/> Out of this, select the complex with maximum number of magnetic moment :</div>
Question 13 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">Which of the following pairs has almost same colour?</p>
Question 14 :
$Cu^{2+}$ has a stronger polarising power than that of $Ca^{2+}$ because :
Question 15 :
The statement that is not correct for the periodic classification of elements is:
Question 16 :
The equivalent weight of $MnO_{2}$ is equal to its molecular weight when it is converted to:<br/>
Question 18 :
The pair of compounds having metals in their highest oxidation state is?
Question 19 :
Titanium shows magnetic moment of 1.73 BM in its compound. What is the oxidation state of titanium in the compound?
Question 20 :
Which of the following is true for the species having 3d$^4$ configuration?
Question 21 :
Among the following, the species that is both paramagnetic and coloured is :
Question 22 :
Electron transfer from $Fe(H_2O)^{2+}_6$ to $Fe(H_2O)^{3+}_6$ is likely to occur via:
Question 23 :
The equilibrium established when $HgCl_2$ is shaken with an excess of $Hg$ is:
Question 25 :
Mercury is the only metal which is liquid at $ 0^o C $. This is due to its
Question 26 :
The atomic number of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26 which one of these may be expected to have the highest second ionization enthalpy:
Question 27 :
Assertion: Dipositive zinc exhibits diamagnetism due to loss of two electrons from 3d-orbital of neutral atom.
Reason: The electronic configuration of zinc (Z = 30) is [Ar]$^{18}$ 3d$^{10}$ 4s$^2$
Question 28 :
Assertion: Solution of $ Na_2CrO_4 $ in water is intensely coloured.
Reason: Oxidation state of $ Cr $ in $ Na_2CrO_4 $ is +VI.
Question 29 :
The atomic radii of the elements are almost same of which series:
Question 30 :
Which of the following compounds has a melting point of $606^o C$?
Question 31 :
The oxidation state of chromium in the final product formed by the reaction between $KI$ and acidified $K_{2}Cr_{2}O_{7}$ solution is:
Question 32 :
In which of the following ionic radii of chromium would be smallest?
Question 34 :
In which of the following oxoanions the oxidation state of central atom is not same as that of its group number in periodic table?
