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

AgCl is soluble is

Question # 2

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

Question # 3

The lanthanides contraction is responsible for the fact that

Question # 4

Transition metals mostly are

Question # 5

Oxalic acid oxidizes to:

Question # 6

Steel may be manufacture by two processes which two are correct

Question # 7

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

Question # 8

Rusting of iron is catalysed by

Question # 9

During oxidation in k2Cr2O7, Cr VI changes to :

Question # 10

In physical and chemical properties, transition elements show

Question # 11

The colour of the transition metal compounds is due to

Question # 12

The elements in which d or f-orbitals are incomplete are called

Question # 13

Which of the following is not correct about transition metals?

Question # 14

The number of unpaired electrons in Mn2+is

Question # 15

Transition elements form which type of bond

Question # 16

The colour of transition metal complexes is due to

Question # 17

Which element does not belong to 4d series

Question # 18

High purity copper metal is obtained by

Question # 19

Which period starts from 11Sc to 30Zn ?

Question # 20

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

Question # 21

Bell metal is an alloy of

Question # 22

The total number of rare earth elements is

Question # 23

Most common oxidation states shownby cerium are

Question # 24

The Mn3+has ______ color

Question # 25

Corrosion of iron can be prevented by coating the surface with

Question # 26

Which of the following is a transition element

Question # 27

Group VI-B of transition elements contains:

Question # 28

Which is in differnet phase form other metals

Question # 29

Most transition elements show

Question # 30

Series starting from57La,42Hf -80Hg is in the period:

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ECAT Chemistry Chapter 17 Important MCQ's

Sr.# Question Answer
1 Which of the following is a transition element
A. Sr
B. Sn
C. Cr
D. Pb
2 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
3 Addition of iron fillings to CuSO4solution caused precipitation of Cu owing to the
A. Reduction of Cu2+
B. Oxidation of Cu2+
C. Reduction of Fe
D. Reduction of Fe3+
4 Iron, once dipped in concentrated H2SO4, does not displace copper from copper sulphates solution, because
A. It less reactive than copper
B. A layer of sulphates is deposited on it
C. An inert layer of iron oxide is deposited on it
D. All valence electrons of iron are consumed
5 3-d series elements are present in:
A. First period
B. Second Period
C. Third period
D. 4th period
6 Besides Zn and Cu , German silver contains the metal
A. Sn
B. Ag
C. Ni
D. Mg
7 Coordination sphere may be:
A. Cationic
B. Anionic
C. Neutral
D. All above
8 In an ooctahedral crystal field splitting, the number of orbitals pushed down in energy is
A. 3
B. 2
C. 5
D. Zero
9 The coordination number of iron in [Fe(H2O)6]3+is
A. 2
B. 3
C. 4
D. 6
10 Fe+3and Mn2+are strong paramagnetic because the number of unpaired electrons in each is
A. 4
B. 5
C. 6
D. 7

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