Transition and Inner Transition Elements Book Back Practice Test

12th Standard Chemistry — Transition and Inner Transition Elements: Book Back Online Practice Test

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Sc( Z=21) is a transition element but Zinc (z=30) is not because

A.both \(Sc^{3+}\) and \(Zn^{2+}\) ions are colourless and form white compounds. B.in case of Sc, 3d orbitals are partially filled but in Zn these are completely filled C.last electron as assumed to be added to 4s level in case of zinc D.both Sc and Zn do not exhibit variable oxidation states

Which of the following d block element has half filled penultimate d sub shell as well as half filled valence sub shell?

A.Cr B.Pd C.Pt D.none of these

Among the transition metals of 3d series, the one that has highest negative \(M/M^{2+}\) standard electrode potential is

A.Ti B.Cu C.Mn D.Zn

Which one of the following ions has the same number of unpaired electrons as present in \(V^{3+}\)?

A.\(Ti^{3+}\) B.\(Fe^{3+}\) C.\(Ni^{2+}\) D.\(Cr^{3+}\)

The magnetic moment of \(Mn^{2+}\) ion is

A.5.92BM B.2.80BM C.8.95BM D.3.90BM

The catalytic behaviour of transition metals and their compounds is ascribed mainly due to

A.their magnetic behaviour B.their unfilled d orbitals C.their ability to adopt variable oxidation states D.their chemical reactivity

Match items in column - I with the items of column – II and assign the correct code. **Column-I** A. Cyanide process B. Froth floatation process C. Electrolytic reduction D. Zone refining **Column-II** (i) Ultrapure Ge (ii) Dressing of ZnS (iii) Extraction of Al (iv) Extraction of Au (v) Purification of Ni

A.A-(i), B-(ii), C-(iii), D-(iv) B.A-(iii), B-(iv), C-(v), D-(i) C.A-(iv), B-(ii), C-(iii), D-(i) D.A-(ii), B-(iii), C-(i), D-(v)

Wolframite ore is separated from tinstone by the process of

A.Smelting B.Calcination C.Roasting D.Electromagnetic separation

Which one of the following is not feasible

A.\(Zn(s) + Cu^{2+}(aq) \rightarrow Cu(s) + Zn^{2+}(aq)\) B.\(Cu(s) + Zn^{2+}(aq) \rightarrow Zn(s) + Cu^{2+}(aq)\) C.\(Cu(s) + 2Ag^{+}(aq) \rightarrow 2Ag(s) + Cu^{2+}(aq)\) D.\(Fe(s) + Cu^{2+}(aq) \rightarrow Cu(s) + Fe^{2+}(aq)\)

Q10

Electrochemical process is used to extract

A.Iron B.Lead C.Sodium D.silver

Q11

How many moles of \(I_2\) are liberated when 1 mole of potassium dichromate react with potassium iodide?

A.1 B.2 C.3 D.4

Q12

The number of moles of acidified \(KMnO_4\) required to oxidize 1 mole of ferrous oxalate (\(FeC_2O_4\)) is

A.5 B.3 C.0.6 D.1.5

Q13

Which one of the following statements related to lanthanons is incorrect?

A.Europium shows +2 oxidation state. B.The basicity decreases as the ionic radius decreases from Pr to Lu. C.All the lanthanons are much more reactive than aluminium. D.Ce4+ solutions are widely used as oxidising agents in volumetric analysis.

Q14

Which of the following lanthanoid ion is diamagnetic?

A.\(Eu^{2+}\) B.\(Yb^{2+}\) C.\(Ce^{2+}\) D.\(Sm^{2+}\)

Q15

Which of the following oxidation state is most common among the lanthanoids?

A.+4 B.+2 C.+5 D.+3

Q16

Assertion: \(Ce^{4+}\) is used as an oxidizing agent in volumetric analysis. Reason: \(Ce^{4+}\) has the tendency of attaining +3 oxidation state.

A.Both assertion and reason are true and reason is the correct explanation of assertion. B.Both assertion and reason are true but reason is not the correct explanation of assertion. C.Assertion is true but reason is false. D.Both assertion and reason are false.

Q17

The most common oxidation state of actinoids is

A.+2 B.+3 C.+4 D.+6

Q18

The actinoid elements which show the highest oxidation state of +7 are

A.Np, Pu, Am B.U, Fm, Th C.U, Th, Md D.Es, No, Lr

Q19

Which one of the following is not correct?

A.\(La(OH)_3\) is less basic than \(Lu(OH)_3\) B.In lanthanoid series ionic radius of \(Ln^{3+}\) ions decreases C.La is actually an element of transition metal series rather than lanthanoid series D.Atomic radii of Zr and Hf are same because of lanthanoid contraction

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This free online practice test covers Transition and Inner Transition Elements from the 12th Standard Chemistry (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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