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

Which element has 4 unpaired electrons in 3d-orbital

Question # 2

Which of the following is non-typical transition element?

Question # 3

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

Question # 4

Which of the following element is responsible for oxidation of water to O2in biological process?

Question # 5

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

Question # 6

f-block elements are called :

Question # 7

Among the lanthandes the one obtained by synthetic method is

Question # 8

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

Question # 9

The less reactivity of transition metal is due to

Question # 10

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

Question # 11

d-block elements are also called :

Question # 12

An element in +3 oxidation state has the electronic configuration (Ar) 3d3. Its atomic number is

Question # 13

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

Question # 14

Potassium ferrocyanide is a

Question # 15

Bronze is an alloy of Cu and

Question # 16

Which of the following is not an element?

Question # 17

Elements in which f-orbitals are in the process of completion are called

Question # 18

The oxidation state of Fe in [Fe(CN)6]3-is

Question # 19

The lanthanides contraction is responsible for the fact that

Question # 20

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

Question # 21

The formula of curprite is

Question # 22

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

Question # 23

The compound which gives oxygen on moderate heating is

Question # 24

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

Question # 25

Which of the following compounds gives red precipitate with AgNO3?

Question # 26

A phtotographic plate is coated with an emulsion of silver nitrate and

Question # 27

f-Block elements are also called

Question # 28

Besides Zn and Cu , German silver contains the metal

Question # 29

The number of unpaired electrons in Fe3+(Z = 26) are

Question # 30

Transition elements form which type of bond

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ECAT Chemistry Chapter 17 Important MCQ's

Sr.# Question Answer
1 Across the lanthanide series, the basicity of the lanthanide hydroxides
A. Increases
B. Decreases
C. First increases and then decreases
D. First decreases and then increases
2 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
3 Besides Zn and Cu , German silver contains the metal
A. Sn
B. Ag
C. Ni
D. Mg
4 The number of unpaired electrons in Fe3+(Z = 26) are
A. 5
B. 6
C. 3
D. 4
5 Series starting form 39Y to 48CD is in period:
A. 4th
B. 5th
C. 6th
D. 7th
6 Corrosion of iron can be prevented by coating the surface with
A. Zn
B. Sn
C. Ni
D. Any of the above
7 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
8 Which element does not belong to 3d transition series
A. Ti
B. V
C. Mn
D. Te
9 Maximum variable oxidation state is of:
A. Mn+2
B. Fe+3
C. Cr+1
D. a and b
10 In the extraction of iron, slag is produced which is
A. CO
B. FeSiO3
C. MgSiO3
D. CaSiO3

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