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Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - JEE MCQ


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30 Questions MCQ Test - Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced

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Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 1

When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is 

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 1

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 2

Which of the following is the weakest base

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 2

∵ Basicity of hydroxides decreases on moving left to right in a period.

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Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 3

One of the constituent of German silver is

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 3

German silver is alloy of Cu + Zn + Ni

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 4

Which of the following dissolve in hot conc. NaOH solution

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 4

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 5

How many unpaired electrons are present in Ni2+?

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 5

It has 2 unpaired electrons. 3d orbital of Ni2+ ion. At No. of Ni = 28.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 6

Sodium thiosulphate is used in photography because of its

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 6

Hypo solution (Na2S2O3) is used in photography to remove the unaffected AgBr in the form of soluble complex.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 7

Iron is rendered passive by treatment with concentrated

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 7

Conc. HNO3 renders iron passive by forming a thin protective film of Fe3O4 on its surface.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 8

In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ion ends up in

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 8

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 9

Zinc-copper couple that can be used as a reducing agent is obtained by :

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 9

Zinc-copper couple is obtained by mixing zinc dust with copper guaze.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 10

Amongst the following, the lowest degree of paramagnetism per mole of the compound at 298 K will be shown by

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 10

Mn 2+ in Mn SO4.4H2O has d 5 con figur ation (five un paired electr on s); Cu2+ in CuSO4.5H2O has d 9 configuration (one unpaired electron); Fe2+ in FeSO4.6H2O has d6 configuration (four unpaired electron); and Ni2+ in NiSO4.6H2O has d8 configuration (two unpaired electron). Thus CuSO4.5H2O has lowest degree of paramagnetism.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 11

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 11

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 12

Which one is solder ?

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 12

Solder is an alloy containing Sn – 67% and Pb – 33%.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 13

Which pair gives Cl2 at room temperature?

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 13

KMnO4 + 16HCl → 2KCl + 2MnCl2 + 8H2O + 3Cl2

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 14

Which compound is formed when excess of KCN is added to aqueous solution of copper sulphate?

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 14

CuSO4 + 2KCN → Cu (CN)2 + K2SO4
2Cu(CN)2 → Cu2(CN)2 +  (CN)2 (Cyanogen)
Cu2(CN)2 + 6 KCN → 2K3 [Cu(CN)4]

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 15

Which compound does not dissolve in hot, dilute HNO3?

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 15

HgS does not dissolved in hot dil. HNO3

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 16

An aqueous solution of FeSO4, Al2(SO4)3 and chrome alum is heated with excess of Na2O2 and filtered. The materials obtained are :

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 16

TIPS/FORMULAE :

Chrome alum is K2SO4.Cr2(SO4)3.24H2O

The filtrate is yellow due to  ion and residue is brown due to Fe(OH)3.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 17

Ammonium dichromate is used in some fireworks. The green coloured powder blown in the air is

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 17

Hence green coloured powder blown in the air is Cr2O3.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 18

The number of moles of KMnO4 that will be needed to react with one mole of sulphite ion in acidic solution is

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 18

The reaction of   in acidic medium is derived as follows:



Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 19

Which of the following is an organometallic compound?

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 19

Organometallic compounds are those compounds in which metal atom is directly bonded with C-atom. H3C – Li.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 20

Which of the following compounds is expected to be coloured?

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 20

The electronic configurations of cations in the given salts are

Only Cu2+ ion has one unpaired electron in 3d orbital and so, its salt is expected to be coloured.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 21

In the dichromate anion,

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 21

The structure of 

There are six normal Cr – O bonds and two bridged Cr – O bonds.
The six normal Cr – O bonds are expected to be equivalent and different from those of the bridged Cr – O bonds.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 22

The geometry of Ni(CO)4 and Ni(PPh3)2Cl2 are

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 22

NOTE : In metal carbonyl the metal is in zero oxidation state.
In Ni(CO)4 , O.N. of Ni = 0
For Ni (Z = 28)

In presence of CO two 4s electrons pair up, thus

In Ni(PPh3)2Cl2, O.N. of Ni = +2 For Ni2+

PPh3 and Cl can’t pair up d-electrons, leading to sp3 hybridization leading to tetrahedral geometry.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 23

The chemical processes in the production of steel from haematite ore involve

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 23

Haematite ore (Fe2O3) is first reduced to cast iron which is then oxidised for removing carbon (impurity) as CO2.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 24

The complex ion which has no ‘d’ electron in the central metal atom is

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 24

In [MnO4], Mn is in +7 oxidation state.
Electronic configuration of Mn (Z = 25) : [Ar] 3d54s2
Electronic configuration of Mn7+  : [Ar] 3d04s0 Central atom in other ions have definite number of d electrons
No. of electrons

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 25

Anhydrous ferric chloride is prepared by

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 25

2Fe + 3Cl2 (dry) → 2FeCl3 (anhydrous)

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 26

When MnO2 is fused with KOH, a coloured compound is formed, the product and its colour is:

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 26

Stable oxidation state of Mn in alkaline medium is +6.
So, MnO2 is oxidised to K2MnO4 (purple green) by atmospheric oxygen in KOH medium.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 27

In the process of extraction of gold,

[X ] + Zn → [Y] + Au

Identify the complexes [X] and [Y]

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 27

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 28

The species having tetrahedral shape is

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 28

The configuration of Ni2+ is 3d8. For the elements of the first transition series, Cl behaves as a weak field/ high spin ligand. Hence Ni in [NiCl4]2– is sp3  hybridised leading to tetrahedral shape.

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 29

The spin magnetic moment of cobalt in the compound Hg[Co(SCN)4] is

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 29

TIPS/FORMULAE :

 (m= spin magnetic moment) Here Co is present as Co2+ ion which has 3 unpaired electrons. So the spin magnetic moment will be

Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 30

The product of oxidation of I with  in alkaline medium is

Detailed Solution for Test: Single Correct MCQs: The d- and f-Block Elements & Coordination Compounds | JEE Advanced - Question 30

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