iCON Education - d and f Block Elements TS-EAMCET Test

Candidate Name

Student

Exam Name

TS-EAMCET

Test Name

d and f Block Elements

Subject

Chemistry

← Back to d and f Block Elements

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00:34:00

Question 1: Palette 1/34

TS-EAMCET 2025 MCQ

The pair of ions with paramagnetic nature and same number of electrons is

$\mathrm{Lu}^{3+}, \mathrm{Yb}^{2+}$

$\mathrm{Eu}^{3+}, \mathrm{Pm}^{2+}$

$\mathrm{Eu}^{2+}, \mathrm{Gd}^{3+}$

$\mathrm{La}^{3+}, \mathrm{Ce}^{4+}$

Question 2: Palette 2/34

TS-EAMCET 2025 MCQ

In which of the following transition metal ion (aquated) is not correctly matched with its colour?

$\mathrm{Fe}^{2+}$-Green

$\mathrm{Cu}^{2+}$ - Blue

$\mathrm{Fe}^{3+}-$ Pink

$\mathrm{V}^{3+}$-Green

Question 3: Palette 3/34

TS-EAMCET 2025 MCQ

Consider the following pairs of elements and identify the pairs of elements which have nearly same atomic radius.

I. Y, La

II. Zr, Hf

III. Mo, W

IV. Cr, Mo

I and II

II and III

III and IV

I and III

Question 4: Palette 4/34

TS-EAMCET 2025 MCQ

$E_{\mathrm{M}^{3}| \mathrm{M}^{2+}}^{\circ}($ in V$)$ is highest for

Question 5: Palette 5/34

TS-EAMCET 2025 MCQ

Identify the correct statements about lanthanoids

I. $\mathrm{Ce}^{4+}$ and $\mathrm{Tb}^{4+}$ act as oxidising agents.

II. $\mathrm{Eu}^{2+}$ and $\mathrm{Yb}^{2+}$ act as oxidising agents.

III. Misch metal is an alloy of $95 \%$ iron and $5 \%$ lanthanoid metal.

IV. $\mathrm{La}^{3+}$ and $\mathrm{Ce}^{4+}$ are diamagnetic in nature.

I and II only

I and IV only

II, III and IV only

I, II and IV only

Question 6: Palette 6/34

TS-EAMCET 2024 MCQ

Match the following

List I (Industrial process)	List II (Catalyst used)
A Ostwald's process	I $\mathrm{CuCl}_2$
B Haber's process	II Zeolites
C Deacon's process	III Pt gauge
D Cracking of hydrocarbons	IV Fe

The correct answer is

$A-$ II, $B-I, C-I V, D-$ III

$A-$ IV, $B-I, C-I I, D-1 I I$

$A-$ III, $B-$ IV, $C-I I, D-1$

$A-$ III, $B-$ IV, $C-I, D-I I$

Question 7: Palette 7/34

TS-EAMCET 2024 MCQ

Observe the following $f$-block elements

$\mathrm{Eu}(Z=63) ; \mathrm{Pu}(Z=94) ; \mathrm{Cf}(Z=98)$;

$\operatorname{Sm}(Z=62) ; \mathrm{Gd}(Z=64) ; \mathrm{Cm}(Z=96)$

How many of the above have half-filled $f$-orbitals in their ground state?

Question 8: Palette 8/34

TS-EAMCET 2024 MCQ

The alloy formed by beryllium with ' $X$ ' is used in the preparation of high strength springs. ' $X$ ' is

Question 9: Palette 9/34

TS-EAMCET 2024 MCQ

Which of the following orders is correct for the property given?

$\mathrm{Cr} < \mathrm{Mn} < \mathrm{Fe}$ - standard electrode potential value for $\mathrm{M}^{3+} / \mathrm{M}^{2+}$

$\mathrm{Cr}^{2+} < \mathrm{Mn}^{2+} < \mathrm{Fe}^{2+}$ - magnetic moments

$\mathrm{VO}_{2}^{+} < \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} < \mathrm{MnO}_{4}^{-}$ - oxidising power

$\mathrm{Ti} < \mathrm{V} < \mathrm{Cr}$ - first ionisation enthalpy

Question 10: Palette 10/34

TS-EAMCET 2024 MCQ

The set of elements which obey the general electronic configuration $(n-1) d^{1-10} n s^2$ is?

$\mathrm{Bh}, \mathrm{Eu}, \mathrm{Po}$

$\mathrm{Ho}, \mathrm{Er}, \mathrm{Lu}$

$\mathrm{Hs}, \mathrm{Hg}, \mathrm{W}$

$\mathrm{K}, \mathrm{Bi}, \mathrm{Ba}$

Question 11: Palette 11/34

TS-EAMCET 2024 MCQ

$Y$ in the given sequence of reactions is

$ \begin{gathered} \mathrm{P}_4+x \mathrm{NaOH}+y \mathrm{H}_2 \mathrm{O} \xrightarrow{\mathrm{CO}_2} X+z \mathrm{NaH}_2 \mathrm{PO}_2 \\ X+\mathrm{CuSO}_4 \longrightarrow Y+\mathrm{H}_2 \mathrm{SO}_4 \end{gathered} $

$\mathrm{Cu}_3\left(\mathrm{PO}_4\right)_2$

$\mathrm{Cu}_3 \mathrm{P}_2$

$\mathrm{Cu}(\mathrm{OH})_2$

$\mathrm{CuCO}_3$

Question 12: Palette 12/34

TS-EAMCET 2024 MCQ

Identify the element for which +1 oxidation state is more stable than +3 oxidation state.

Question 13: Palette 13/34

TS-EAMCET 2024 MCQ

Identify the correct statements from the following.

(i) Ti (IV) is more stable than Ti (III) and Ti (II).

(ii) Among $3 d$-series elements (From $Z=22$ to 29). Only copper has positive reduction potential $\left(M^{2+} / M\right)$.

(iii) Both Sc and Zn exhibit +1 oxidation state.

i, ii only

ii, iii only

i, iii only

i, il, iii

Question 14: Palette 14/34

TS-EAMCET 2023 MCQ

The product formed during thermal decomposition of ammonium dichromate are

$\mathrm{O}_2, \mathrm{H}_2 \mathrm{O}, \mathrm{Cr}(\mathrm{OH})_3$

$\mathrm{NO}_2, \mathrm{H}_2 \mathrm{O}, \mathrm{Cr}_2 \mathrm{O}_3$

$\mathrm{N}_2, \mathrm{Cr}_2 \mathrm{O}_3, \mathrm{H}_2 \mathrm{O}$

$\mathrm{N}_2 \mathrm{O}, \mathrm{Cr}(\mathrm{OH})_3$

Question 15: Palette 15/34

TS-EAMCET 2023 MCQ

In +2 oxidation state, which of the following lanthanoids act as reducing agents?

$\mathrm{Ce}, \mathrm{Pr}$

Eu, Gd

Eu, Yb

Lu, Er

Question 16: Palette 16/34

TS-EAMCET 2023 MCQ

Among the following the incorrect statement about transition metals is

$\mathrm{Cr}, \mathrm{Mo}$ and W have high melting points.

With increase in number of unpaired. electrons melting point increases.

$\mathrm{Mn}^{3+}$ is more stable than $\mathrm{Mn}^{2+}$.

They show variable oxidation states.

Question 17: Palette 17/34

TS-EAMCET 2023 MCQ

Observe the following ions

$ \mathrm{V}^{2+}, \mathrm{Zn}^{2+}, \mathrm{Cu}^{2+}, \mathrm{Fe}^{2+}, \mathrm{Fe}^{3+}, \mathrm{Ti}^{3+}, \mathrm{Sc}^{3+}, \mathrm{Ti}^{4+}, \mathrm{Ni}^{3+}, \mathrm{Co}^{3+}, \mathrm{Cu}^{+} $

How many ions in the above list have zero magnetic moment?

Question 18: Palette 18/34

TS-EAMCET 2023 MCQ

The order of melting points of $\mathrm{Cr}, \mathrm{Mo}$ and W is

$\mathrm{Cr}>\mathrm{Mo}>\mathrm{W}$

$\mathrm{Mo}>\mathrm{Cr}>\mathrm{W}$

$\mathrm{W}>\mathrm{Mo}>\mathrm{Cr}$

$\mathrm{W}>\mathrm{Cr}>\mathrm{Mo}$

Question 19: Palette 19/34

TS-EAMCET 2023 MCQ

The number $f$-electrons in +3 oxidation state of gadolinium $(Z=64)$ is $x$ and in +2 oxidation state of ytterbium $(Z=70)$ is $y$. The sum of $x$ and $y$ is

Question 20: Palette 20/34

TS-EAMCET 2022 MCQ

Assertion (A) Mo has the ground state electronic configuration $4 d^5 5 s^1$.

Reason (R) Mo has the highest exchange energy among the second row transition elements.

The correct option among the following is

(A) is true, (R) is true and (R) is the correct explanation for (A).

(A) is true, (R) is true but (R) is not the correct explanation for (A).

(A) is true but (R) is false.

(A) is false but (R) is true.

Question 21: Palette 21/34

TS-EAMCET 2022 MCQ

Choose the correct statement.

$\mathrm{Fe}^{3+}$ ion is more stable than $\mathrm{Fe}^{2+}$ ion because

more the charge on the atom, more is its stability.

electronic configuration of $\mathrm{Fe}^{2+}$ is $3 d^6$ while that of $\mathrm{Fe}^{3+}$ is $3 d^5$.

$\mathrm{Fe}^{2+}$ has a larger size than that of $\mathrm{Fe}^{3+}$.

$\mathrm{Fe}^{3+}$ ions are coloured.

Question 22: Palette 22/34

TS-EAMCET 2022 MCQ

The elements with full $d^{10}$ electronic configuration in their " +2 " oxidation state are

$\mathrm{Cu}, \mathrm{Ni}, \mathrm{Zn}$

$\mathrm{Ni}, \mathrm{Au}, \mathrm{Cd}$

$\mathrm{Au}, \mathrm{Hg}, \mathrm{Pd}$

$\mathrm{Zn}, \mathrm{Cd}, \mathrm{Hg}$

Question 23: Palette 23/34

TS-EAMCET 2022 MCQ

The increase in the atomic radii of the third (5d) series of transition elements is very small, which may be accounted for the filling of ' $X$ ' orbitals before ${ }^{\prime} Y^{\prime}$ orbitals $X$ and $Y$ are

X	Y
4f	5d

X	Y
5f	5d

X	Y
5d	4f

X	Y
4f	4d

Question 24: Palette 24/34

TS-EAMCET 2022 MCQ

The valency shell electronic configuration of Cr and Cu atoms, respectively, are

$3 d^4 4 s^2 ; 3 d^{10} 4 s^1$

$3 d^5 4 s^1 ; 3 d^{10} 4 s^1$

$3 d^5 4 s^1 ; 3 d^9 4 s^2$

$3 d^4 4 s^2 ; 3 d^9 4 s^2$

Question 25: Palette 25/34

TS-EAMCET 2022 MCQ

Identify all the correct statements for lanthanoide contraction.

(A) The covalent properties of the lanthanoide metal hydroxides increases from La to Lu.

(B) The chemical reactivity decreases from La to Lu.

(D) Zr and Hf have about the same radius.

(E) Separation of lanthanoides from one another is easy.

A, B, C, E only

A, B, C, D only

A, B, C only

B, C, D only

Question 26: Palette 26/34

TS-EAMCET 2022 MCQ

On treating $\mathrm{SO}_2$ with aqueous solution of $\mathrm{KMnO}_4$, the manganese ion reduces to

$\mathrm{Mn}^{2+}$ only

$\mathrm{Mn}^{4+}$ only

$\mathrm{Mn}^{6+}$ only

$\mathrm{Mn}^{4+}$ and $\mathrm{Mn}^{6+}$

Question 27: Palette 27/34

TS-EAMCET 2022 MCQ

The correct order of ionic radii of trivalent ions $\mathrm{Y}^{3+}, \mathrm{La}^{3+}, \mathrm{Eu}^{3+}$ and $\mathrm{Lu}^{3+}$ is $(\mathrm{Y}=39, \mathrm{La}=57, \mathrm{Eu}=63, \mathrm{Lu}=71)$

$\mathrm{Lu}^{3+}<\mathrm{Eu}^{3+}<\mathrm{La}^{3+}<\mathrm{Y}^{3+}$

$\mathrm{La}^{3+}<\mathrm{Eu}^{3+}<\mathrm{Lu}^{3+}<\mathrm{Y}^{3+}$

$\mathrm{Y}^{3+}<\mathrm{Lu}^{3+}<\mathrm{Eu}^{3+}<\mathrm{La}^{3+}$

$\mathrm{Y}^{3+}<\mathrm{La}^{3+}<\mathrm{Eu}^{3+}<\mathrm{Lu}^{3+}$

Question 28: Palette 28/34

TS-EAMCET 2022 MCQ

When permanganate ion is heated at 513 K , led to the formation of two manganese based products. The physical properties of the product in which manganese with the higher oxidation state than the other are

diamagnetic and colourless

paramagnetic and colourless

paramagnetic and green

diamagnetic and green

Question 29: Palette 29/34

TS-EAMCET 2022 MCQ

Assertion (A) In general, transition metals have high melting points.

Reason (R) More number of electrons from ' $(n-1) d^{\prime}$ and ' $n s$ ' are involved in interatomic metallic bonding.

The correct option among the following is

(A) is true, (R) is true and (R) is the correct explanation for (A)

(A) is true, (R) is true but (R) is not the correct explanation for (A)

(A) is true but (R) is false

(A) is false but (R) is true

Question 30: Palette 30/34

TS-EAMCET 2020 MCQ

Which of the following ions will exhibit colour in aqueous solution?

$\mathrm{La}^{+3}(Z=57)$

$\mathrm{Ti}^{3+}(\mathrm{Z}=22)$

$\mathrm{Lu}^{3+}(Z=71)$

$\mathrm{Sc}^{3+}(Z=21)$

Question 31: Palette 31/34

TS-EAMCET 2020 MCQ

Trans uranium elements are

elements before uranium

inter transition elements

elements after uranium

actinoid elements

Question 32: Palette 32/34

TS-EAMCET 2020 MCQ

The highest oxidation state observed in first row transition metals is

Question 33: Palette 33/34

TS-EAMCET 2020 MCQ

Among the following series of transition metal ions, the one in which all the metal ions have $3 d^2, 3 p^6$ electronic configuration is

(Atomic number, $\mathrm{Ti}=22, \mathrm{~V}=23, \mathrm{Cr}=24$, $\mathrm{Mn}=25$ )

$\mathrm{Ti}^{3+}, \mathrm{V}^{2+}, \mathrm{Cr}^{3+}$ and $\mathrm{Mn}^{4+}$

$\mathrm{Ti}^{+}, \mathrm{V}^{4+}, \mathrm{Cr}^{6+}$ and $\mathrm{Mn}^{7+}$

$\mathrm{Ti}^{4+}, \mathrm{V}^{3+}, \mathrm{Cr}^{2+}$ and $\mathrm{Mn}^{3+}$

$\mathrm{Ti}^{2+}, \mathrm{V}^{3+}, \mathrm{Cr}^{4+}$ and $\mathrm{Mn}^{5+}$

Question 34: Palette 34/34

TS-EAMCET 2020 MCQ

Which of the following statement is not true about interstitial complexes?

Small atom like $\mathrm{C}, \mathrm{H}$ or N are trapped inside crystal lattice

They are usually non-stoichiometric

They generally retain metallic conductivity

They are chemically very active

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