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Test: General Chemical & Magnetic Properties of d & f-Block Elements - NEET MCQ


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25 Questions MCQ Test Topic-wise MCQ Tests for NEET - Test: General Chemical & Magnetic Properties of d & f-Block Elements

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Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 1

Only One Option Correct Type

Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q.

Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 1

(n - 1) d5ns2 attains the maximum oxidation state of+ 7.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 2

Among the following series of transition metal ions, the one where all metal ions have 3d2 electronic configuration is (Atomic number, Ti = 22, V = 23, Cr = 24, Mn = 25) 

[AIEEE 2004]

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 2

Ti2+,V3+,Cr4+ and Mn5+ show 1s22s22p63s23p64s03d2 electronic configuration.

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Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 3

For the four successive transition elements (Cr, Mn, Fe and Co), the stability of + 2 oxidation state will be there in which of the following order?

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 3

Mn2+ (d5) > Cr2+ (d4) > Fe2+ (d6) > Co2+ (d7) Mn2+ is more stable due to half-filled configuration, i . e . d5.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 4

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

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 4

The variability of oxidation state, a characteristic of transition element arises due to incomplete filling of d-orbitals.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 5

Many copper (I) compounds are unstable in aqueous solution and undergo disproportionation as 2Cu+ → Cu + Cu2+ . This is due to

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 5

Cu (I) undergoes spontaneous disproportionation.

hus, ΔG is negative (spontaneous) for disproportionation.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 6

Gun metal is an alloy of

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 6

Gun metal is an alloy of Cu, Zn and Sn. It contains 88% Cu 10% Sn and 2% Zn.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 7

In which of the following pairs both the ions are coloured in aqueous solution? (Atomic number, Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 7

Ni2+ and Ti3+ ions are coloured in aqueous solution because they contain unpaired electrons.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 8

[Ti (H2O)6]3+ absorbs green and yellow region part of visible light. Then the transmitted colour of the compound is

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 8

We know that white light is composed of many different colours. When white light is allowed to fall on [Ti(H2O)6]3+ ion, this ion absorbs the light of green and yellow colour and transmits is almost purple colour.The purple colour of the transmitted light is called complimentary colour of that of absorbed light.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 9

Compound of metal ion MX+(Z = 26) has a spin only magnetic moment of   BM The number of unpaired electrons and x value in the compound are

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 9

Metal ion is Fe3+ which have 5 unpaired electrons.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 10

In which of the following the stability of two oxidation states is correctly represented?

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 10

Mn2+ (d5) is more stable than Mn3+(d4) because Mn2+ have half-filled configuration.

*Multiple options can be correct
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 11

One or More than One Options Correct Type

Direction (Q. Nos. 11-15) This section contains 5 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q. 

Which one of the following arrangements represent the correct order of the property stated against it?

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 11

Due to the presence of unpaired electrons, transition elements are paramagnetic in nature. Mn2+ contains 5 unpaired electrons while Fe2+ contains 4 unpaired electrons.
Manganese exhibits all the oxidation states from + 2 to + 7.

*Multiple options can be correct
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 12

The metals present in German silver alloy are

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 12

It is a copper alloy with nickel and often zinc. The usual formation is 60% copper, 20% nickel and 20% zinc.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 13

 Paramagnetic Curie temperature in Kelvin for iron is equal to :

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 13

Paramagnetic Curie temperature for iron is equal to 1095 Kelvin. Relative permeability is greater than 1 for paramagnetic material.

*Multiple options can be correct
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 14

+8 oxidation state is/are shown by

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 14

+8 oxidation state shown by Ru and Os.

*Multiple options can be correct
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 15

Ions having same colour in aqueous solution are

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 15

Ni2+ and Fe2+ have green colour and V4+ and Cr2+ have blue colour.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 16

Comprehension Type

Direction (Q, Nos. 16 and 17) This section contains a paragraph, describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

Transition metals and their compounds have paramagnetic properties due to the presence of unpaired electrons in (n - 1)d-orbitals. The paramagnetic behaviour is expressed in terms of magnetic moment which is because of the spin of the unpaired electrons (n). It is given as
Magnetic moment =   
Majority of transition metal compounds are coloured both in solid state as well as in aqueous solution. This is also due to the presence of unpaired electrons in (n - 1) d-orbitals, d-orbitals splitting and d-d transition of electrons absorbing suitable visible light.

Q. 

Which of the following exhibit colour due to charge transfer phenomenon, but not due to d-d transition?

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 16

In transition metal complexes, a change in electron distribution between the metal and a ligand give rise to charge transfer bonds.
Here, charge transfer may occur from the ligand molecular orbitals to the empty or partially filled metal d-orbitals.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 17

Transition metals and their compounds have paramagnetic properties due to the presence of unpaired electrons in (n - 1)d-orbitals. The paramagnetic behaviour is expressed in terms of magnetic moment which is because of the spin of the unpaired electrons (n). It is given as
Magnetic moment =   
Majority of transition metal compounds are coloured both in solid state as well as in aqueous solution. This is also due to the presence of unpaired electrons in (n - 1) d-orbitals, d-orbitals splitting and d-d transition of electrons absorbing suitable visible light.

Q. 

Which pair of ions are expected to be diamagnetic?

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 17

Ag+ (d10) and Au+(d10) are diamagnetic due to absence of unpaired number of electrons.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 18

Matching List Type

Direction (Q. No. 18-20) Choices fo r the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q. 

Match the Column I with Column II and mark the correct option from the given codes.

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 18

(i) → (s),(ii) → (p),(iii) → (q) (iv) → (r)

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 19

Match the Column I with Column II and mark the correct option from the given codes.

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 19

(i) → (s), (ii) → (s), (iii) → (p),(iv) → (q)

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 20

Match the Column I with Column II and mark the correct option from the given codes.

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 20

Fenton’s reagent (Fe SO4 + H2O2) is used for oxidising alcohol to aldehyde. Zeigler-Natta catalyst [AI(C2H5)3 + TiCI4] is used for manufacture of polythene.
(i) → (Q). (ii) → (r), (iii) → (s), (iv) → (p)

*Answer can only contain numeric values
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 21

One Integer Value Correct Type

Direction (Q. Nos. 21-24) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q. 

Number of alloys that contain nickel among the following solder, gun metal, German silver, nichrome, monel metal, constanton, bell metal, duralumin, type metal, invar, alnico.


Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 21

German silver (Cu + Zn + Ni), nichrome (Ni 60% + Cr 20% + Fe), monel metal (Cu + Ni 66%), constanton (Cu + Ni), invar (Fe + Ni), alnico (Al + Ni + Co + Cu).

*Answer can only contain numeric values
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 22

Green vitriol is FeSO4.xH2O and white vitriol is ZnSO4.yH2O, Then, the values of x and y are


Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 22

In both, xand y value is 7.

*Answer can only contain numeric values
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 23

Oxidation state of chromium in CrO5 is +x. Here, value of x is


Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 23

4 oxygen atoms attached by peroxide linkage. So, their oxidation states are taken as -1.
Now, let the oxidation state of Cr be x.
then x + 4 x (-1) - 2 = 0
x = 6 

*Answer can only contain numeric values
Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 24

Number of compounds in which metal has zero oxidation state

WO3,Ni(CO)4, MoO3, Fe(CO)5, Cr(CO)6, [Pt(NH3)2CI2], Co2(CO)8 and Mn2(CO)10


Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 24

In metal carbonyls, metal oxidation state is zero.

Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 25

Statement Type

Direction (Q. No. 25) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q. 

Statement l : ,Cu2O and Ni-DMG complex are coloured.

Statement II : It is due to charge transfer transition.

Detailed Solution for Test: General Chemical & Magnetic Properties of d & f-Block Elements - Question 25

Colours of ,Cu2O and Ni-DMG complex are due to charge transfer transition.
(iv) Sodium sulphite is a reducing agent. It reduces acidified K2CrO7 to chromic sulphate which is green in colour.

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