Class 12 Chemistry Chapter 8 the d and f Block Elements MCQs | Class 12 Chemistry Chapter 8 the d and f Block Elements Multiple Choice Questions (MCQs) with Answers

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Questions
1 Which of the following does not considered as transition element ?
A Au
B Hg
C La
D Pt

Answer:Hg
2 Which of the following does not relevant with transition elements ?
A Melting points of transition elements are high
B Some ions of transition elements possesses paramagetic properties
C All transition elements dissolves in acid
D Transition elements processes various oxidation state

Answer:All transition elements dissolves in acid
3 Which elements have low ionisation enthalpy as compare to their neighbour element in first transition element ?
A Cr, Cu
B Cr, Zn
C Cr, Mn
D Cu, Zu

Answer: Cr, Cu
4 Thermal stability of transition metal elements depends upon which of the following ?
A Atomic radii
B Magnitude of ionisation enthalpy
C On electrode potential
D Shielding effect

Answer: Magnitude of ionisation enthalpy
5 In which of the following compound of trantion metal ion has 4.90 BM magnetic momentum?
A KMnO4
B NiCl2
C CoCl2
D FeSO4

Answer: FeSO4
6 Which of the following sentence is not suitable for the capacity of transition metal to form complex compounds ?
A Transition metal ions are small in size
B Nuclear charge of trantion metal ion in comparatively more
C Co-ordination covalent bond is not directional
D Transition metal ions possesses different oxidation states

Answer:Co-ordination covalent bond is not directional
7 Which of the following rules to prepare alloys should be obey ?
A Difference in atomic radii should be less than 15%
B Valence electron configuration should not be equal
C Atomic volume should not same
D Crystal lattice structure are different

Answer:Difference in atomic radii should be less than 15%
8 What is the difference in atomic radii of two metallic elements to prepare alloys ?
A 15%
B more than 15%
C less than 15%
D 24.5 %

Answer:15%
9 What is the difference of atomic radii of Au and Cu in 22 carate gold ?
A 15%
B more than 15%
C less than 15%
D 24.5%

Answer:24.5%
10 Mn, Co, Cu metals are generally useful to prepare alloys because
A the difference in their atomic volume is more than 15%
B the difference in their atomic volume is less than 2%
C the difference in their atomic volume is 15%
D the difference in their atomic volume is 2%

Answer:the difference in their atomic volume is less than 2%
11 Which alloy is used in preparation of coins ?
A Brass
B Bronze
C German-Silver
D Nichrome

Answer:Bronze
12 Which alloy is used in preparation of antic - piece ?
A Nitinol
B Bronze
C Cupronickle
D German-Silver

Answer: German-Silver
13 Which alloy possesses facinating property of memory ?
A Brass
B Nitinol
C Nichrom
D Cupronicle

Answer: Nitinol
14 Where potasium dicromate is used ?
A In leather industry
B In textile industry
C As germiside
D As bleaching agent in cotton cloths

Answer:In leather industry
15 What is atomic volume of Au and Cu in 22 carrate gold ornaments ?
A 134 pm 118 pm
B 133 pm 118 pm
C 134 pm 117 pm
D 135 pm 117 pm

Answer:134 pm 117 pm
16 Potassium permangnate is used as _____
A As reducing agent
B As corrosion inhibitors
C As decolouring agent in textile industry
D In preparation of azo compound

Answer: As decolouring agent in textile industry
17 Which of following is used in dry cell ?
A KMnO4
B MnO2
C K2 Cr2 O7
D K2MnO2

Answer: MnO2
18 Which of alloy is used to fill dental cavities ?
A Sodium amalgam
B Zinc chloride
C Mercury
D Mercury Amalgam

Answer:Mercury Amalgam
19 Which of following is used as gernlicide
A  K2Cr2O7  
B KMnO4 
C FeSO4  
D K2MnO4

Answer: KMnO4 
20 Which of following elements are include in Lanthanoide series ?
A La to Lu
B Ce to Lu
C La to yb
D Ce to yb

Answer: Ce to Lu

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