ECAT Pre Engineering Chemistry Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 17 Transition Elements

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ECAT Chemistry Chapter 17 Transition Elements

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Question # 1

The percentage of carbon in different types of iron products is in the order of

Question # 2

The free spaces between the metal atoms and its crystal lattice are called

Question # 3

Steel may be manufacture by two processes which two are correct

Question # 4

Property of transition element is :

Question # 5

Which of the following metal exhibits more than one oxidation?

Question # 6

d-block elements closely resemble in their physical and chemical properties. Which statement is incorrect

Question # 7

Which has the largest radius?

Question # 8

Transition elements form which type of bond

Question # 9

4-d series is in the period:

Question # 10

[Zn(NH3)4]3+possess geometry

Question # 11

Which is in differnet phase form other metals

Question # 12

In the manufacture of iron from haematitie,limestone is added to act as

Question # 13

Mercury is the only metal which is liquid at 0°C. this is due to its

Question # 14

High purity copper metal is obtained by

Question # 15

Potassium ferrocyanide is a

Question # 16

Rusting of iron is catalysed by

Question # 17

All 3d series elements show variable oxidation states. The one shown by all 3d elements is

Question # 18

Which metal is used for catalytic hydrogenation of oils

Question # 19

Iron, once dipped in concentrated H2SO4, does not displace copper from copper sulphates solution, because

Question # 20

The equivalent weight of KMnO4(formula weight = M) when it is used as an oxidant in neutral medium is

Question # 21

6-d series is in the period :

Question # 22

Which is used to identify Cu2+ions

Question # 23

[Cu[NH3)4]+2will form ______ structure

Question # 24

Misch mental is

Question # 25

Addition of iron fillings to CuSO4solution caused precipitation of Cu owing to the

Question # 26

Which of the following is obtained when Fe reacts with dil. HNO3?

Question # 27

Sodium thisoulophate is used in photography because of its

Question # 28

Which of the following is non-typical transition element?

Question # 29

Solubility of KMnO4 at higher temperature is:

Question # 30

Potassium chromate has formula

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Sr. # Question Answer
1 Stainless steel contains Cr upto

A. 12%

B. 18%

C.10%

D. 5%

2 The colour of transition metal complexes is due to:

A. d-d transitions of electorns

B. Paramagnetic nature of transition

C.Ionization

D. Loss of s-electrons

3 Which is used to identify Cu2+ions

A. Nitric acid

B. Sulfuric acid

C.NaOH

D. HCI

4 All 3d series elements show variable oxidation states. The one shown by all 3d elements is

A. +2

B. +3

C.+4

D. +5

5 Fe+3and Mn2+are strong paramagnetic because the number of unpaired electrons in each is

A. 4

B. 5

C.6

D. 7

6 The protection of steel by chrome plating is due to

A. Cathodic protection

B. Anodic protection

C.Covering of steel surface

D. Formation of alloy with iron

7 IIB elements (Zn, Cd, Hg) and III B elements (Sc, Y and La) are

A. Non typical transition element

B. Typical transition element

C.Normal elements

D. Inner transition element

8 Which of the following acts as ligand

A. NH3

B. NH2-- CH2-- CH2-- NH2

C.C2O2-4

D. All these

9 The number of unpaired electrons in Mn2+is

A. 5

B. 4

C.3

D. 2

10 Which of the following is not related to transition metals

A. They have a high tensile strength

B. They are ductile

C.They are malleable

D. They have low melting points

11 The free spaces between the metal atoms and its crystal lattice are called

A. Valance spaces

B. Empty spaces

C.Interstices

D. None

12 Which of the following is a transition element

A. Sr

B. Sn

C.Cr

D. Pb

13 What are alloys

A. A homogenous mixture of two or more elements

B. A homohenous mixture of metal and a non-metal

C.A homogenous mixture of two or more metals

D. None of the above

14 Which of the following is obtained when Fe reacts with dil. HNO3?

A. N2O

B. NO

C.NO2

D. None of these

15 Transition metals form complexes due to the participation of partially filled

A. f-orbitals

B. d-orbitals

C.s-orbitals

D. p-orbitals

16 Out of 110 known elements, transition elements are

A. 40

B. 60

C.50

D. 80

17 Corrosion may be prevented by

A. Allcying

B. Paints

C.Metallic coatings

D. All

18 Which period starts from 11Sc to 30Zn ?

A. First Period

B. Second Period

C.Third Period

D. 4th Period

19 Transition elements differ from s and p block elements due to their characteristic properties. What is not he characteristic property of transition elements

A. Transition elements show variable oxidation states

B. Their salts are coloured

C.They can be used as catalyst

D. All of them are metals

20 The percentage of carbon in different types of iron products is in the order of:

A. Cast iron > wrought iron > steel

B. wrought iron > steel > cast rion

C.Cast iron > steel > wrought iron

D. Cast iron = steel > wrought iron

21 Stainless steel contains ion and carbon along with

A. Ni and Cr

B. Cr and Co

C.Co and Mn

D. Mn and Ni

22 Which of the following is a non-typical transition elements

A. Cr

B. Mn

C.Zn

D. Fe

23 Corrosion of iron can be prevented by coating the surface with

A. Zn

B. Sn

C.Ni

D. Any of the above

24 Which of the following is a carbonate are?

A. Pyrolusite

B. Malchite

C.Diaspore

D. cassiterite

25 Coordination number of Pt in [Pt Cl(NO2) (NH3)]2-is

A. 2-

B. 4

C.1

D. 6

26 The oxidation number of Ni in [Ni(CO)4] is

A. +1

B. 0

C.+4

D. -4

27 Which of the following metals is sometimes found in native state in nature?

A. Al

B. Cu

C.Fe

D. Mg

28 In the electronic configuration of Cr one electron from 4s sub-shell is transfered to 3d sub-shell because

A. The 3rd orbital is of lower energy than 4s

B. The 4s orbital is of equal energy to 3d orbital

C.The half filled d-subshell is more stable than incomplete d-sub shell

D. 6 unpaired electrons make Cr more paramagnetic

29 The less reactivity of transition metal is due to

A. High heats of sublimation

B. High ionization energies

C.Low heats of salvation

D. All these

30 The colour of a transition metal complex is due to d-d transition The colour of the complex is the complementary of the colour absorbed. Thus [Ti(H2O6]3+abosrbs yellow light and transmits blue and red colours therefore the solution of titanium complex appears

A. Blue

B. Red

C.Yellow

D. Mixture of blue and red or violet

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