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Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - NEET MCQ


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25 Questions MCQ Test - Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds

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Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - 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. A filter paper moistened with ammoniacal sodium nitroprusside solution turns violet on contact with a drop of alkaline Na2S solution .The violet colour is due to the formation of

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 1

Na2S + Na2[Fe(CN)5NO] →

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 2

Wilkinson’s catalyst is

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 2

Wilkinson’s catalyst is a rhodium complex [(Ph3P)3RhCI] and it is used as a catalyst for hydrogenation of alkenes reactions.

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Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 3

Tollen’s reagent contains

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 3

Tollen's reagent (ammonical silver nitrate solution) which is a colorless, basic, aqueous solution containing silver ions coordinated to ammonia; [Ag(NH3)2]+.

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 4

The compound formed by dissolving gold and platinum in aqua-regia is

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 4

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 5

Among the following, which is not the n-bonded organometallic compound?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 5

(CH3)4 Sn is a σ-bonded organometaiiic compound.

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 6

Which of the following biomolecules contain a non-transition metal ion?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 6

The pigment responsible for photosynthesis, i.e. chlorophyll is a coordination compound of magnesium.

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 7

In black and white photography, the developed film is fixed by washing with hypo solution which dissolves the undecomposed AgBr to form a complex ion formed is

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 7

2Na2S2O3 + AgBr → Na3[Ag(S2O3)2]+ NaBr

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 8

In the estimation of hardness of water, the reagent used is

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 8

The quantity of Ca, Mg salts in water is estimated by using standard EDTA solution using erichrome black T as an indicator.

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 9

Which of the following is powerful cr-donor and n-acceptor ligand?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 9

CO as ligand is sigma donor and pi acceptor ligand.This is called pi-acid.

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 10

Fe2+ and Fe3+ can be distinguished by

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 10


*Multiple options can be correct
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 11

Orie 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 of the following forms a metal carbonyl corresponding [M(CO)6]?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 11

Stable complex is obtained when sum of metal d-electrons and electrons donated by ligands and the overall charge of the complex equals to 18. Chromium and tungsten obey 18-electron rule or effective atomic number rule.
In [Cr(CO)6]
Atomic number of chromium = 24
∴ Cr contains electrons = 24 e- 
6 CO ligand donate (6 x 2 electrons) = 12 e-
EAN of [Cr(CO)6] = 36e- 
Thus, it may be stated that the complex [Cr(CO)6] obeys EAN rule and it will be stable complex. [W(CO)6] can be solved same as above.

*Multiple options can be correct
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 12

In which of the following porphyrin acts as ligand?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 12

he porphyrin ring contains pyrrote unit are linked by four (—CH =)bridges. Porphyrine are derived from porphin, varying according to the nature of substituents. Porphyrin ring act as tetradentate ligands with four pyrole like nitrogens surrounding a central site of metals.. Iron complex of the substituted porphin is here. When magnesium lie at the centre of substituted porphin ring; the resulting complex is called chlorophyll.

*Multiple options can be correct
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 13

Which are π-bonded organometallic compounds?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 13

η6 -arene is 6-electron ligand, η2 — C2H4 is 2-electron ligand η6-cyclopentadienyl is 5-electron donor. All these 3 ligands creates π-bonded complex. CO as a ligand is sigma donor and pi-acceptor ligand.

*Multiple options can be correct
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 14

Which is the correct?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 14

[Fe(NCS)6]3-, [Fe(H2O)6]2+ ,[Cu(H2O)4]2+ are correct.

*Multiple options can be correct
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 15

How many of the following combinations in an aqueous medium will give a blue colour or precipitate?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 15


Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - 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

Coordination compounds play a vital role in our lives. The importance of these compounds can be realised from the fact that life would not have been possible without the existence of chlorophyll in plants and haemoglobin in the blood of the animals. The field of such compounds has expanded very fast in recent years and coordination compounds are playing important roles in analytical chemistry, polymerisation reactions, metallurgy and refining of metals, etc.

Q. 

The reagent used for identifying nickel ion is

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 16

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 17

Coordination compounds play a vital role in our lives. The importance of these compounds can be realised from the fact that life would not have been possible without the existence of chlorophyll in plants and haemoglobin in the blood of the animals. The field of such compounds has expanded very fast in recent years and coordination compounds are playing important roles in analytical chemistry, polymerisation reactions, metallurgy and refining of metals, etc.

Q. 

Which is used in cancer chemotherapy?

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 17

cis-dia m m inedichlo roplatin um (II), [cis[Pt(NH3)2CI2] is used in cancer chemotherapy.
The mechanism of cis-platin is based on Pt-DNA interaction. Platinum binds with N7 of two intrastrand adjacent guanine bases of DNA.
Their binding changes the active conformation of DNA leading to inhibiting of DNA replication or cell division.
cis -Pt(NH3)2CI2 + H2O .......cis - [Pt(NH3)2(OH)2CI]+ + Cl- 
The hydrolysis reaction of cis-platin is an important aspect of the biological activity.
DNA coordinated trans complex begin to decrease after six hour whereas the cis-isomer is then accumulated in the cell nucleus.

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 18

Matching List Type

Direction (Q. Nos. 18 and 19) 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 Column I with Column II and mark the correct option from the codes given below.

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 18

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

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 19

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

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 19

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

*Answer can only contain numeric values
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 20

One Integer Value Correct Type

Direction (Q. Nos. 20-24) This section contains 5 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q. 

The number of terminal carbonyl groups present in Fe2(CO)9 are


Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 20


Fe2(CO)9 contains 3 bridging CO groups placed symmetrically around the (Fe—Fe) bond and 6 terminal carbonyl groups.

*Answer can only contain numeric values
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 21

In Fe2(CO)9, the number of CO present between iron atoms ......


Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 21

Fe2(CO)9 has three bridging CO groups.

*Answer can only contain numeric values
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 22

In [Co2(CO)8], the number of CO molecules lying between the metal atoms are


Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 22


Each cobalt atom is bonded to three terminal CO group and share two CO ligands as bridging groups.

*Answer can only contain numeric values
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 23

The number of M—M bonds in [Ir4(CO)12] are


Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 23

Each Ir bonded to three iridium atoms and three CO molecules. The number of Ir— Ir bonds are 6.

*Answer can only contain numeric values
Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 24

In Mn2(CO)10, the number of CO molecules in between the metal atoms are


Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 24

Mn(CO)5 is radical with 17-electron configuration. Therefore, it undergoes dimerisation through the formation of M—M single bonds and complex their valence shells to avoid ligand-ligand repulsion the Mn(CO)5 units acquire staggered configuration.

Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - 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 I : Mn(π— C3H5)(CO)4, obey effective atomic number rule.

Statement II : π-allyl ligand act as a 3e- donor.

Detailed Solution for Test: Bonding in Organometallic Compounds, Stability & Applications of Coordination Compounds - Question 25

In Mn(π -C3H5) (CO)4
Mn= 25
π-C3H5 = 3
4 (CO) = 8
Hence, EAN = 36
Hence, π-C3H5 ligand acts as a 3-electron donor and complex obey effective atomic number rule.

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