d and f Block Elements MCQs | Question

Topic: d and f Block Elements, Test No.: 01, Total MCQs: 10

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Question 1

Which one of the following molecules is expected to exhibit diamagnetic behaviour? [JEE MAIN 2013]

A	C₂
B	N₂
C	O₂
D	S₂

Question 2

Which of the following arrangements does not represent the correct order of the property stated against it? [JEE MAIN 2013]

A	V²⁺ < Cr²⁺ < Mn²⁺ < Fe²⁺ : paramagnetic behaviour
B	Ni²⁺ < Co²⁺ < Fe²⁺ < Mn²⁺ : ionic size
C	Co³⁺ < Fe³⁺ < Cr³⁺ < Sc³⁺ : stability in aqueous solution
D	Sc < Ti < Cr < Mn : number of oxidation states

Question 3

Which of the following lanthanoid ions is diamagnetic? [NEET 2013]

(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)

A	Ce²⁺
B	Sm²⁺
C	Eu²⁺
D	Yb²⁺

Question 4

KMnO₄can be prepared from K₂MnO₄ as per the reaction:

3MnO₄^2– 2H₂O 2MnO₄^– + MnO₂ + 4OH^–

The reaction can go to completion by removing OH^–ions by adding [NEET 2013]

A	KOH
B	CO₂
C	SO₂
D	HCl

Question 5

Which of the following statements about the interstitial compounds is incorrect? [NEET 2013]

A	They retain metallic conductivity
B	They are chemically reactive
C	They are much harder than the pure metal
D	They have higher melting points than the pure metal

Question 6

(NH₄)₂Cr₂O₇ On heating gives a gas which is also given by

A	heating NH₄NO₂
B	heating NH₄NO₃
C	Mg₃N₂ + H₂O
D	Na (comp.) + H₂O₂

Question 7

A red solid is insoluble in water. However, it becomes soluble if some KI is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is

A	(NH₄)₂Cr₂O₇
B	HgI₂
C	HgO
D	Pb₃O₄

Question 8

All the metals form oxides of the type MO except

A	copper
B	barium
C	silver
D	lead

Question 9

Among the following, the coloured compound is

A	CuCl
B	K₃ [Cu(CN)₄]
C	CuF₂
D	[Cu(CH₃CN)₄]BF₄

Question 10

Anhydrous ferric chloride is prepared by

A	Dissolving Fe(OH)₃ in concentrated HCl
B	Dissolving Fe(OH)₃ in dilute HCl
C	Passing dry HCl over heated iron scrap
D	Passing dry Cl₂ gas over heated iron scrap

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d and f Block Elements MCQs | Question – Paper 1

Topic: d and f Block Elements, Test No.: 01, Total MCQs: 10

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