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Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - JEE MCQ


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30 Questions MCQ Test - Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements)

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Revisal Problems (Past 13 Year) JEE Advanced (D 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 W o rk in g Space choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q. 

Consider the four sulphates FeSO4, MnSO4, CoSO4 and ZnSO4, Four separate capsules of these materials have been made containing 0.1 mole of the substance and are suspended by a thread. Then a strong magnet is brought close to each capsule. Order of sulphates according to the strength of the response that the magnet will produce on these capsules is

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 1

The substance which have unpaired electron shows paramagnetic behaviour. The number of unpaired electrons present in these substances as follows :
(d5)Mn2+ = 5 unpairede- 
(d6)Fe2+ = 4 unpairede- 
(d7)Co2+ = 3 unpairede- 
(d10) Zn = no unpaired

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 2

A non-stoichiometric oxide of silver has composition Ag1.8O. What percentage of Ag is present in the atom of Ag2+?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 2

Consider one mole of the oxide, moles of M = 1.8 and moles of O2- = 1
Let moles of M2+ = x and moles of M+ = 1.8 - x
During charge balance
(1.8 - x) x 1 + 2x - 2 = 0 
On solving, we get
x = 0.
Hence, percentage of M2+ 

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Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 3

Which of the following will not act as an oxidising agent?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 3

Stability of higher oxidation states increases down the group. WO3 is more stable in + 6. Hence, it does not act as an oxidising agent.

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 4

Which of the following is the correct order of magnetic moment (in BM) for Mn2+, Cr2+ and V2+?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 4

The num ber of unpaired electrons in Mn2+, Cr2+ and V2+ are 5, 4 and 3, respectively.
The magnetic moment (BM) can be calculated by the spin-only formula

where, n is the number of unpaired electrons.
Hence, the magnetic moment of Mn2+ ,Cr2+ and V2+ are 5.91,4.89 and 3.87 respectively.

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 5

For a given sample of Fe2+ solution, if 30 mL of 0.1 volume of 0.1 M permanganate required is

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 5


and similarly, 0.1 M  = 0.5 N 
Fe2+ =  =  
= 30ML of 0.1M 
= V ML of 0.1 M 
or 30 mL of 0.6 N  = V mL of 0.5 M 
Hence, volume of  4 solution required

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 6

Which one of the following elements shows maximum number of different oxidation numbers in its compounds?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 6

Americium have +3, +4, +5 and +6 oxidation states.

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 7

Oxidation state of mercury in amalgam, calomel and corrosive sublimate is

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 7

Amalgam shows zero oxidation state, calomel (Hg2CI2)shows +1 oxidation state while corrosive sublimate (HgCI2)shows + 2 oxidation state.

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 8

Which of the following electrode reactions has more negative SRP value?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 8

The SRP value is as follows :

Mn3+ / Mn2+ = + 1.57
Fe3+ / Fe2+ = + 0.77
Cr3+ / Cr2+ = - 0.41
V3+ / V2+ = -0.26

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 9

Acidified K2Cr2O7 is treated with hydrogen sulphide. In this reaction, the oxidation state of chromium

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 9

K2Cr2O7 + 4H2SO4 + 3H2S → K2SO+ Cr2(SO4)+ 7H2O + 3S

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 10

Among the following strongest oxidising agent is:

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 10

Among the given compound, [CrO4]2- show+6oxidation state which only reduces therefore, it is strongest reducing agent.

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 11

One or More than One Options Correct Type

Direction (Q. Nos. 11-20) This section contains 10 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 of the following are soluble in water?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 11

AgBr is insoluble in water while AgF , AgNO3 and AgCIO4 are soluble in water.

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 12

Which are correct statements?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 12

The element which gives the greatest number of oxidation states occur in or near the middle of the series.

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 13

Which is correct regarding structure of dichromate ion?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 13

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 14

Which are correctly matched ?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 14

Nessler’s reagent is a mixture of 2K2Hgl4 + 3KOH. It is used to test NH3(g) and .

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 15

Among the following metals, which have relatively higher second ionisation potential?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 15

Because second electron will remove from half-filled d-orbital in case of chromium and full-filled d-orbital in case of copper. Both these orbitals are more stable relative to other orbitals.

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 16

Find the correct statements.

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 16

Metallic radii of zinc is greater than copper.
Zn (137 pm) > Cu (128 pm)

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 17

Which are correctly matched?

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 17

MnO2 used in dry battery cells; TiO2 is used in pigm ent industry; Zeigler-Natta catalyst is AI(C2H5)+ TiCI4 and AgBr is used in photographic plates.

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 18

KMnO4 in an acidic medium oxidises.

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 18

KMnO4 oxidises H2O2,and  in acidic medium.

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 19

Find incorrect statements.

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 19

Cr shows highest oxidation state + 6. Mercury exists asHg+ and Hg2+ions.

*Multiple options can be correct
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 20

The species having same number of unpaired electrons

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 20

Eu2+, Gd3+ and Tb4+ have 7 unpaired electrons. Lu3+ have no unpaired electron.

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 21

Comprehension Type

Direction (Q. Nos' 21 and 22) This section contains a paragraph, each 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

A violet compound of manganese A decomposes on heating to give compounds 6 and C along with the liberation of a gaseous substance D. Compound C reacts with KOH in the presence of KNO3 to give compound B. On heating C with conc . H2SO4 and NaCI, greenish yellow gas E is liberated and a compound  of manganese F is formed along with other products.

Q. 

The greenish yellow gas liberated in the above reactions is

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 21



Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 22

A violet compound of manganese A decomposes on heating to give compounds 6 and C along with the liberation of a gaseous substance D. Compound C reacts with KOH in the presence of KNO3 to give compound B. On heating C with conc . H2SO4 and NaCI, greenish yellow gas E is liberated and a compound  of manganese F is formed along with other products.

Q. 

The compounds A and C in the above reactions are

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 22


Hence, A = KMnO4 and C = MnO2

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 23

Matching List Type

Direction (Q. Nos.23 and 24) Choices for 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 following reagents given in Column I with the Column II. Mark the correct option from the codes given below.

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 23

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

Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 24

Match the following characteristics given in Column I with the corresponding elements given in Column II. Mark the correct option from the codes given below.

Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 24

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

*Answer can only contain numeric values
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 25

One Integer Value Correct Type

Direction (Q. Nos. 25-30) This section contains 6 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q. 

What is van't Hoff factor if Hg2(NO3)2 is 100% ionised in aqueous solution?


Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 25

*Answer can only contain numeric values
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 26

The number of electrons in 4f subshell of +4 oxidation state of terbium are


Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 26

Tb = [Xe] 4795cf°6s2 andTb4+ = [Xe] 4775c7°6s°

*Answer can only contain numeric values
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 27

The calculated magnetic moment of Fen+ ion is 4.90 BM. The sum of the number of electrons presemn 3d subshell of Fen+ ion and the value of n is


Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 27

Magnetic moment 4.90 BM indicates that Fe has 4 unpaired electrons. Then iron is Fe2+.

*Answer can only contain numeric values
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 28

In solid CuSO4.5H2O copper is coordinated to ......... water molecules.


Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 28

In solid CuSO4-5H2O, copper is coordinated to 4 water molecules.

*Answer can only contain numeric values
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 29

when this equation is balanced in basic medium, the sum of the coefficients in the balanced equation is


Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 29

*Answer can only contain numeric values
Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 30

Among the following ion, the number of ions which are colourless

La3+, Pr3+,Lu3+,Ce3+,Tm3+,Yb3+,Er3+


Detailed Solution for Revisal Problems (Past 13 Year) JEE Advanced (D Block Elements) - Question 30

La3+ - colourless, Pr3+- yellow green Lu3+ - colourless, Ce3+ - colourless

Tm3+ - green, Yb3+ - colourless, Er3+ - green

 

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