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

Stainless steel contains ion and carbon along with

Question # 2

Sodium thisoulophate is used in photography because of its

Question # 3

Which is the correct electronic configuration of Cr - 24

Question # 4

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

Question # 5

The colour of transition metal complexes is due to:

Question # 6

The number of unpaired electrons in Mn2+is

Question # 7

What is the name of the comlex [Ni(CO)4]

Question # 8

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

Question # 9

Titanium is used as a catalyst in

Question # 10

A transition metal complex can be recognized by various terms. Which is not the proper term

Question # 11

Bronze is an alloy of Cu and

Question # 12

Which of the following is not an element?

Question # 13

Transition metals mostly are

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

In the extraction of iron, slag is produced which is

Question # 18

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

Question # 19

Which element does not belong to 3d transition series

Question # 20

Which one of the following has highest density

Question # 21

The amount of Ni in stainless steel is

Question # 22

The colour of transition metal complexes is due to

Question # 23

In physical and chemical properties, transition elements show

Question # 24

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

Question # 25

4-d series is in the period:

Question # 26

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

Question # 27

Corrosion may be prevented by

Question # 28

Which of the following is a transition element

Question # 29

Which element has 4 unpaired electrons in 3d-orbital

Question # 30

Bell metal is an alloy of Sn and

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Sr.# Question Answer
1 Misch mental is
A. An alloy of Aluminium
B. A mixture of chromium and lead chromate
C. An alloy of lanthanoid metals
D. An alloy of copper
2 The lanthanides contraction is responsible for the fact that
A. Zr and Y have about the same radius
B. Zr and Nb have similar oxidsation state
C. Zr and Hf have about the same radius
D. Zr and Zn have the same oxidation satete
3 Which of the following is a not typical transition element
A. Cr
B. Mn
C. Zn
D. Fe
4 Which of the following has the maximum number of unpaired d-electrons?
A. Zn
B. Fe2+
C. Ni3+
D. Cu+
5 Stainless steel contains Cr upto
A. 12%
B. 18%
C. 10%
D. 5%
6 Which metal is used for catalytic hydrogenation of oils
A. Cu
B. Pt
C. Ni
D. Pd
7 Which element belong to 5d series
A. V
B. Nb
C. Pd
D. Hf
8 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
9 Which of the following compounds gives red precipitate with AgNO3?
A. Kl
B. K2CrO4
C. NaBr
D. NaNO3
10 The coordination number of iron in [Fe(H2O)6]3+is
A. 2
B. 3
C. 4
D. 6
11 How many mole of acidfied FeSO4solution can be completely oxidized by one mole of KMNO4?
A. 10
B. 5
C. 6
D. 2
12 Bell metal is an alloy of
A. Cu, Zn, and Sn
B. Cu, Zn and Ni
C. Cu and Zn
D. Cu and Sn
13 Stainless steel contains ion and carbon along with
A. Ni and Cr
B. Cr and Co
C. Co and Mn
D. Mn and Ni
14 Coordination number of Pt in [PtCl (NO2) (NH3)4]2-
A. 2-
B. 4
C. 1
D. 6
15 Which alloy contains 50% copper, 25% zinc and 25% nickel
A. German silver
B. Gun metal
C. Bell metal
D. Brass
16 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
17 What is the name of the comlex [Ni(CO)4]
A. Tetracarbonylnickel (o)
B. Tetracabonylnickel
C. Tetracabonylnickel (II)
D. Tetracabonylnickel (IV)
18 The number of unpaired electrons in Mn2+is
A. 5
B. 4
C. 3
D. 2
19 [Zn(NH3)4]3+possess geometry
A. Square plannar
B. Hexagonal
C. Tetrahedral
D. None of these
20 A transition metal complex can be recognized by various terms. Which is not the proper term
A. Central metal ion
B. Coordination number
C. Ligand
D. Geometry of complex
21 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
22 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
23 During oxidation in k2Cr2O7, Cr VI changes to :
A. I
B. II
C. III
D. IV
24 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
25 All 3d series elements show variable oxidation states. The one shown by all 3d elements is
A. +2
B. +3
C. +4
D. +5
26 Maximum variable oxidation state is of:
A. Mn+2
B. Fe+3
C. Cr+1
D. a and b
27 Turnbull's blue is a compound called?
A. Ferricyanide
B. Ferrous ferricyanide
C. Ferrous cyanide
D. Ferri - Ferro cyanide
28 6-d series is in the period :
A. 4th
B. 5th
C. 6th
D. 7th
29 Choose the correct answer of transition elements?
A. Transition elements have low melting points
B. Transition elements do not have catalytic activity
C. Transition elements exhibit variable oxidation states
D. Transition elements exhibit inert pair effect
30 An element in +3 oxidation state has the electronic configuration (Ar) 3d3. Its atomic number is
A. 24
B. 23
C. 22
D. 21

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