ECAT Pre Engineering Chemistry Chapter 17 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 17 Transition Elements

Try The 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

d-block elements are also called :

Question # 2

Which is used to identify Cu2+ions

Question # 3

Steel may be manufacture by two processes which two are correct

Question # 4

Among the lanthandes the one obtained by synthetic method is

Question # 5

Rusting of iron is catalysed by

Question # 6

Transition elements are called so because:

Question # 7

Which of the following metal exhibits more than one oxidation?

Question # 8

German silver does not contain

Question # 9

Which alloy contains 50% copper, 25% zinc and 25% nickel

Question # 10

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

Question # 11

Which of the following is not an element?

Question # 12

Turnbull's blue is a compound called?

Question # 13

Potassium hexacyanoferrate (II) has the formula

Question # 14

During oxidation in k2Cr2O7, Cr VI changes to :

Question # 15

What are alloys

Question # 16

Which one of the following has highest density

Question # 17

Which period starts from 11Sc to 30Zn ?

Question # 18

Coordination number of Pt in [PtCI(NO2) (NH3)4]2+is

Question # 19

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

Question # 20

The colour of the transition metal compounds is due to

Question # 21

Which of the following acts as ligand

Question # 22

The total number of inner transition elements in the periodic table is

Question # 23

The number of unpaired electrons in Mn2+is

Question # 24

Solubility of KMnO4 at higher temperature is:

Question # 25

Besides Zn and Cu , German silver contains the metal

Question # 26

Series starting form 39Y to 48CD is in period:

Question # 27

Transition elements form which type of bond

Question # 28

Potassium chromate has formula

Question # 29

Bell metal is an alloy of

Question # 30

Bessemer converter is used in the manufacture of

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Sr. # Question Answer
1 The geometry of [Co(NH3)6]3+is

A. Tetrahedral

B. Square planar

C.Octahedral

D. None of these

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

A. Cr

B. Mn

C.Zn

D. Fe

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

A. Zn

B. Sn

C.Ni

D. Any of the above

4 Coordination number of Pt in [PtCI(NO2) (NH3)4]2+is

A. 2-

B. 4

C.1

D. 6

5 Which of the following d-block elements can show the highest oxidation number in its compounds

A. Chromium

B. Copper

C.Nickel

D. Manganese

6 Out of 110 known elements, transition elements are

A. 40

B. 60

C.50

D. 80

7 Which is the correct electronic configuration of Cr - 24

A. 1s2, 2s2, 2p6, 3s2, 3p6, 3d4, 4s2

B. 1s2, 2s2, 2p6, 3s2, 3p6, 3d3, 4s2, 4p1

C.1s2, 2s2, 2p6, 3s2, 3p6, 3d5, 4s1

D. 1s2, 2s2, 2p6, 3s2, 3p6, 3d5, 4p1

8 German silver does not contain

A. Cu

B. Zn

C.Ni

D. Mn

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

A. M

B. M/2

C.M/3

D. M/5

10 Non-formation of menisus by Hg in presence of O3is due to the formation of

A. Mercuric oxide

B. Mercurous oxide

C.Mercuric chloride

D. Mercurous chloride

11 [Co(NH3)6]3+will form ______ structure

A. Square planar

B. Tetrahedral

C.Octahedral

D. Trigonal bipyamidal

12 Which one of the following metal ions is colourless?

A. V2+

B. Cr3+

C.Zn2+

D. Ti3+

13 The colour of transition metal complexes is due to

A. d-d transitions of electrons

B. Para magnetic nature of transition elements

C.Ionization

D. Loss of s-electrons

14 Maximum variable oxidation state is of:

A. Mn+2

B. Fe+3

C.Cr+1

D. a and b

15 Series starting form 39Y to 48CD is in period:

A. 4th

B. 5th

C.6th

D. 7th

16 Which has the largest radius?

A. CO3+

B. Mn3+

C.Fe3+

D. Cr3+

17 Which is the formula of tetra-ammine chloro-nitro platinum (IV) sulphate

A. [Pt(NH3)4(NO2)] SO4

B. [Pt NO2CI(NH3)4] SO4

C.[Pt CI(NO2) (NH3)4] SO4

D. [Pt (NH3)4(NO2) CI] SO4

18 Rusting can be avoided by :

A. Making alloys

B. Tin or Zinc plating

C.Use of enamel

D. All of these

19 Coordination sphere may be:

A. Cationic

B. Anionic

C.Neutral

D. All above

20 Coordination number of Pt in [PtCl (NO2) (NH3)4]2-

A. 2-

B. 4

C.1

D. 6

21 Which metal is used for catalytic hydrogenation of oils

A. Cu

B. Pt

C.Ni

D. Pd

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

A. 4

B. 5

C.6

D. 7

23 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

24 The total number of inner transition elements in the periodic table is

A. 10

B. 14

C.28

D. 30

25 Which of the following elements does not show variable oxidation states?

A. Copper

B. Iron

C.Zinc

D. Titanium

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

A. Flux

B. A reducing agent

C.Slag

D. An oxidizing agent

27 The colour of the transition metal compounds is due to

A. p-d transition

B. d-d transition

C.s-p transition

D. None of these

28 Which of the following is non-typical transition element?

A. Cr

B. Mn

C.Zn

D. Fe

29 The total number of transition elements is:

A. 10

B. 14

C.40

D. 50

30 f-block elements are called :

A. Alkali metal

B. Alkakline earth metals

C.Transition elements

D. Electron deficient elements

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