Question 1 :
Of the ions ZN<sub>2</sub>+ , Ni2+ and Cr<sub>3</sub>+ (atomic number Zn = 30, Ni = 28, Cr = 24):<br>
Question 4 : <div> What is the correct order of covalent size of the following ?<br/></div>Ca ____ Sc
Question 5 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">Magnetic moment of diamagnetic substance in Bohr Magnetons is _____________.</p>
Question 6 :
Which of the following transition element shows the highest oxidation state :<br>
Question 7 :
Atoms of the transition elements are smaller than those of the s-block elements, because :<br>
Question 9 :
It is sometimes necessary to remove colouring matter contained as an impurity in glass. Glass is decolourised by:
Question 10 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p>Order of atomic radii of Ti, Zr, Hf is:</p>
Question 11 :
A transition element X has a configuration $[Ar]3d^4$, in its +3 oxidation state. Its atomic number is:
Question 12 :
Knowing that the Chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statement is incorrect?<br>
Question 15 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">Which one of the following ion exhibits colour in aqueous solution ? </p>
Question 16 :
The ''spin-only'' magnetic moment [in units of Bohr magneton, (mB) of Ni<sup>2+</sup> in aqueous solution would be (atomic number of Ni = 28)<br>
Question 17 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">Which one of the following ionic species will impart colour to an aqueous solution?</p>
Question 19 :
Which of the following has the maximum number of unpaired d-electron?<br>
Question 21 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">The transition series that possess elements with maximum oxidation state of +8:</p>
Question 22 :
Which of the following group of ions is paramagnetic in nature :<br>
Question 23 :
The Oxidation state of chromium in the final product formed by the reaction between<br>K1 and acidified potassium dichcromate solution is:<br>
Question 24 :
The actinoids exhibit more number of oxidation states in general than the lanthanoids. This because
Question 25 :
In context with the transition elements, which of the following statements is incorrect?<br>
Question 26 :
A compound is yellow when hot and white when cold. The compound is :<br>
Question 28 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">The maximum oxidation state of osmium is:</p><b><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span></b>
Question 29 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">Transition metals are often para magnetic owing to ____________.</p>
Question 30 :
Which of the following transition metal ions has the lowest density?<br>
Question 31 :
Amongst the following, identify the species with an atoms in +6 oxidation state.
Question 32 :
The maximum oxidation state shown by V(Z=23), Cr(z=24), Co(Z=27),Sc(Z=21) are respectively:
Question 33 :
Which of the following commonly forms an ionic compounds as a $-1$ anion?
Question 34 : <div> What is the correct order of the covalent size of the following?<br/></div><br/>Cr ______ Mn
Question 36 :
In context of lanthanoids, which of the following statements is not correct?
Question 37 :
Among K, Ca, Fe and Zn, the elements which can form more than one binary compound with chlorine is:
Question 39 :
Amongst $TiCl_{ 6 }^{ 2- },CoF_{ 6 }^{ 3- },{Cu}_{2}{Cl}_{2}$ and $NiCl_{ 4 }^{ 2- }$ the colourless species are:<br>
Question 42 :
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 44 :
The equivalent weight of $MnO_{2}$ is equal to its molecular weight when it is converted to:<br/>
