Chemistry/Chemistry MCQ Question - Transition Elements Sample Test,Sample questions

Question:
Aniline is a derivative of benzene which contains

1.Imino group

2.Amino group

3.Amide group

4.Nitro group


Question:
Any process of chemical decay of metals due to the action of surrounding medium is called

1.activation

2.enameling

3.corrosion

4.coating


Question:
Boric acid cannot be used

1.As antiseptic in medicine

2.For washing eyes

3.In soda bottles

4.For enamel and glazes


Question:
By which method the molecular mass of benzene was determined as 78.108?

1.Specific gravity method

2.Vapour density method

3.X-ray diffraction method

4.Distillation methos


Question:
Compounds attracted by applied strong magnetic field are called

1.diamagnetic

2.paramagnetic

3.good conductor

4.ferromagnetic


Question:
Coordination number of the transition element in [Pt Cl NO2 (NH3)4]2- is

1.2

2.6

3.4

4.8


Question:
Geometry of the complex compounds usually depends upon

1.type of ligands

2.types of hybridization in the elements of ligands

3.hybridization of central metal

4.All of above


Question:
Group VIB of transition elements contains

1.Zn Cd Hg

2.Fe Ru Os

3.Cr Mo W

4.Mn Te Re


Question:
How many ? electrons are there in benzene to form delocalized electronic cloud

1.3

2.4

3.6

4.8


Question:
How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum?

1.Two

2.Three

3.Four

4.Six


Question:
Identify the correct statement regarding CO

1.it combines with H2O to form carbonic acid

2.it reacts with red blood cells of haemoglobin

3.it is powerful oxidizing agent

4.it is used to prepare aerated drinks


Question:
If temperature of gallium arsenide is increased then its conductivity will

1.decrease

2.increase

3.remains constant

4.first decreases then increases


Question:
In benzene sulphonic acid the sulphonic group is attached with benzene ring through

1.Hydrogen

2.Oxygen

3.Sulphur

4.?OH


Question:
In complex compounds the oxidation number is written in

1.English

2.Greek

3.Roman numeral

4.Hebrew


Question:
In pig iron the concentration of C-atom is

1.0.12 --- 0.25%

2.2.5 --- 4.5%

3.2.0 --- 4.0%

4.0.25 --- 2.5%


Question:
In the production of wrought iron Mg Si and P are removed in the form of

1.oxides

2.silicates

3.slag

4.carbonates


Question:
K2 (Cu(CN)4) which one is correct

1.Potassium tetra cyano cupperate

2.Co-ordination number is 2

3.Ligand is positively charged

4.Central atom is present in avionic sphere


Question:
Michael Faraday discovered benzene in the gas which was produced by destructive distillation of vegetable oil that is done in

1.The presence of Oxygen

2.The presence of Hydrogen

3.The absence of Oxygen

4.The presence of excessive Oxygen


Question:
Nitration of chlorobenzene gives

1.o - chloronitrobenzene

2.p - chloronitrobenzene

3.m - chloronitrobenzene

4.a & b


Question:
Non-stoichiometric compounds of transition elements are called

1.hydrates

2.hydrides

3.binary compounds

4.interstitial compounds


Question:
Phenanthrene is a fused polycyclic compound contains ______ benzene rings

1.Two

2.Three

3.Four

4.Five


Question:
Pure metal

1.corrode slowly

2.corrode rapidly

3.does not corrode easily

4.none of these


Question:
The central atom along with ligands is called

1.complex ion

2.coordination sphere

3.ligand

4.complex compound


Question:
The chief ore of A? is:

1.Na3A?F6

2.A?2O32H2O

3.A?2O3H2O

4.A?2O33H2O


Question:
The compound or complex ion which has a ring in its structure

1.polydentate ligand

2.chelate

3.monodentate ligand

4.hydrate


Question:
The correct electronic configuration of Cr is

1.[Ar]4s23d4

2.[Ar] 4s23d4

3.[Ar]4s03d5

4.[Ar]4s13d5


Question:
The leements in which d or f orbitals are in the process of completion are

1.outer transition elements

2.inner transition elements

3.typical transition elements

4.transition elements


Question:
The location of transition elements is in between

1.lanthanides & actinides

2.s and p block elements

3.chalcogens and halogens

4.d and f block elements


Question:
The melting points and boiling points upto meddle of 3d- series

1.increases

2.decreases

3.remain same

4.no regular trend


Question:
The molecular formula of toluene is

1.C7H7

2.C7H8

3.C8H8

4.C8H7


Question:
The oxidation number in [MnO4]-2

1.7

2.?7

3.6

4.?6


Question:
The oxidation number of central metal atom in [Ni(CO)4] is

1.0

2.2

3.4

4.6


Question:
The oxidation state of transition elements is usually

1.variable

2.constant

3.single

4.infinite


Question:
The specie which donates electrons to central metal atom in coordination sphere is called

1.anion

2.cation

3.Ligand is positively charged

4.acid


Question:
The species which donate two electron pairs in a coordination compound is called

1.ligand

2.mono-dentate ligand

3.poly-dentate ligand

4.bi-dentate ligand


Question:
When a compound of transition element is dissolved in a solution of salt then it produces

1.simples ions

2.complex ions

3.double salts

4.strong anions


Question:
When an active metal like Al comes in contact with less active element like Cu then it produces

1.dry cell

2.galvanic cell

3.electrolytic cell

4.a and b


Question:
When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound?

1.Bromine

2.Chlorine

3.Fluorine

4.Iodine


Question:
When light is exposed to transition element then electrons jump from lower orbitals to higher orbitals in

1.orbitals of f-subshell

2.orbitals of d-subshell

3.orbitals of p-subshell

4.both a & b


Question:
When the central atom of coordination compound is sp3d2 hybridization the expected geometry will be

1.tetrahedral

2.square planar

3.trigonal bipyramidal

4.octahedral


Question:
When two or more different substituents are attached with a benzene ring the number 1 position in the ring is given to a high priority group. Which one of the following groups has highest - priority?

1.?NH2

2.?CHO

3.?COOH

4.?CN


Question:
Which element can form tripositive ion?

1.Beryllium

2.Carbon

3.Silicon

4.Aluminium


Question:
Which is sold as fertilizer

1.CaSiO3

2.Na2SiO3

3.Ca3(PO4)2

4.MnSiO3


Question:
Which of the following can form a chealate

1.ammine

2.oxalato

3.carbonyl

4.cyano


Question:
Which of the following is metasilicic acid?

1.H2SnO3

2.H2SiO3

3.H3AsO4

4.H3SbO4


Question:
Which of the following is typical transition metal?

1.Sc

2.Y

3.Cd

4.Co


Question:
Which of the following will decompose to produce litharge

1.Pb2O

2.Pb3O4

3.PbO2

4.All of the above


Question:
Which one of the following is not a meta directing group?

1.?CN

2.?OH

3.?COOH

4.?CHO


Question:
Which pair of groups contains both ortho & para directing groups

1.?OH ?RCO

2.?NR3 ?CN

3.?OCH3 ?CHO

4.?N (CH3)2 -NH2


Question:
With impurities like P and S the open hearth furnace is lined with.

1.SiO2

2.Fe2O3

3.FeO

4.CaO MgO


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