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 iron obtained from blast furnace is

Question # 2

Bell metal is an alloy of

Question # 3

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

Question # 4

The compound which gives oxygen on moderate heating is

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Which is used to identify Cu2+ions

Question # 9

During oxidation in k2Cr2O7, Cr VI changes to :

Question # 10

[Zn(NH3)4]3+possess geometry

Question # 11

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

Question # 12

Interstitial compounds have

Question # 13

Among the lanthandes the one obtained by synthetic method is

Question # 14

The number of unpaired electrons in ferrous ion ( Z - 26) is

Question # 15

Which period starts from 11Sc to 30Zn ?

Question # 16

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

Question # 17

Most transition elements show

Question # 18

Transition metals mostly are

Question # 19

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

Question # 20

The total number of transition elements is

Question # 21

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

Question # 22

Which element belong to 5d series

Question # 23

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

Question # 24

Rusting can be avoided by :

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Corrosion may be prevented by

Question # 29

Potassium hexacyanoferrate (II) has the formula

Question # 30

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

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Sr.# Question Answer
1 Which alloy contains 50% copper, 25% zinc and 25% nickel
A. German silver
B. Gun metal
C. Bell metal
D. Brass
2 A phtotographic plate is coated with an emulsion of silver nitrate and
A. AgCI
B. AgI
C. AgBr
D. NaNO3
3 The free spaces between the metal atoms and its crystal lattice are called
A. Valance spaces
B. Empty spaces
C. Interstices
D. None
4 The compound which gives oxygen on moderate heating is
A. Zinc oxide
B. Mercuric oxide
C. Aluminium oxide
D. Ferric oxide
5 AgCl is soluble is
A. Aqua regia
B. H2SO4
C. HCl
D. NH3
6 Which of the following is used as disinfectant
A. K2Cr2O7
B. KMnO4
C. K2MnO4
D. K2CrO4
7 The formula of curprite is
A. Cu2S
B. Cus
C. Cu2O
D. CuCO3
8 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
9 Transition elements form which type of bond
A. Ionic bonds only
B. Covalent bonds only
C. Ionic and covalent bonds
D. Polar bonds
10 Maximum variable oxidation state is of:
A. Mn+2
B. Fe+3
C. Cr+1
D. a and b
11 Platinum (IV) chloride combines with ammonia to form compounds in which the coordination number of the platinum is 6. A formula unit on one of the compound contains a cation and only two chloride ions. What is the formula of this compound
A. Pt(NH3)6CI4
B. Pt(NH3)5CI4
C. Pt(NH3)4CI4
D. Pt(NH3)3CI4
12 Which of the following is not an element?
A. Graphite
B. Diamond
C. 22-Carat gold
D. Rhombic sulphur
13 Cu2+with d9electronic configuration appears
A. Yellow
B. Pink
C. Blue
D. Green
14 Potassium ferrocyanide is a
A. Mixed salt
B. Double salt
C. Complex salt
D. Normal salt
15 Which metal is used for catalytic hydrogenation of oils
A. Cu
B. Pt
C. Ni
D. Pd
16 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
17 Group VI-B of transition elements contains:
A. Zn, Cd, Hg
B. Fe ,Ru ,Os
C. Cr, Mo ,W
D. Mn, Te, Re
18 [Zn(NH3)4]3+possess geometry
A. Square plannar
B. Hexagonal
C. Tetrahedral
D. None of these
19 Which element does not belong to 3d transition series
A. Ti
B. V
C. Mn
D. Te
20 f-Block elements are also called
A. Non typical transition elements
B. Outer transition elements
C. Normal transition elements
D. Inner transition elements
21 Potassium hexacyanoferrate (II) has the formula
A. K4[Fe(CN)6]
B. K3[Fe(CN)6]
C. K2[Fe(CN)6]
D. K [Fe(CN)6]
22 Which of the following is obtained when Fe reacts with dil. HNO3?
A. N2O
B. NO
C. NO2
D. None of these
23 Bell metal is an alloy of Sn and
A. Copper
B. Iron
C. Zinc
D. Magnesium
24 Which of the following is a transition element
A. Sr
B. Sn
C. Cr
D. Pb
25 5-d series is in the period :
A. 4th
B. 5th
C. 6th
D. 7th
26 Most common oxidation states shownby cerium are
A. +2, +4
B. +3, +4
C. +3, +5
D. +2, +3
27 Solubility of KMnO4 at higher temperature is:
A. 5%
B. 7%
C. 15%
D. 25%
28 Elements in which f-orbitals are in the process of completion are called
A. Outer transition element
B. Inner transition elements
C. Non-tranistion elements
D. Radioactive elements
29 What is wrong about transition metals?
A. Diamagnetic
B. Paramagnetic
C. Form complexes
D. Shows variable oxidation state
30 Which is in differnet phase form other metals
A. Ni
B. Hg
C. Cd
D. Na

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