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Question-1
In which of the following compounds transition metal has zero oxidation state ?

(A) [Fe(CO)₅]	(B) NH₂ . NH₂
(C) NOClO₄	(D) CrO₅

Question-2 Identify the incorrect statement among the following.

(A) There is a decrease in the radii of the atoms or ions as one proceeds from La or Lu.	(B)Lanthanide contraction is the accumulation of successive shrinkages
(C)As a result of lanthanide contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.	(D)Shielding power of 4f electrons is quite weak

Question-3
Cuprous compounds such as CuCl, CuCN and CuSCN are the only salts stable in H₂O due to

(A) high hydration energy of Cu⁺ ions	(B) their inherent tendency not to disproportionate
(C) diamagnetic nature	(D) insolubility in water

Question-4
Nitriding is the process of surface hardening of steel by treating it in an atmosphere of

(A) NH₃	(B) N₂
(C) O₃	(D) H₂S

Question-5 Which one of the following ions is the most stable in aqueous solution ?
(At no Ti = 22, V = 23, Cr = 24, Mn = 25)

(A) Cr³⁺	(B)V³⁺
(C)Ti³⁺	(D)Mn³⁺

Question-6 Lanthanides are

(A) 14 elements in the sixth period (at no = 90 to 103) that are filling 4f sub-level	(B)14 elements in the seventh period (at no = 90 to 103) that are filling 5f sub-level
(C)14 elements in the sixth period (at no = 58 to 71) that are filling 4 f sub-level	(D)14 elements in the seventh period (at no = 58 to 71) that are filling 4f sub-level.

Question-7
Among the lathanides the one obtained by synthetic method is

(A) Lu	(B) Pm
(C) Pr	(D) Gd

Question-8
The most durable metal plating on iron to protect against corrosion is

(A) Nickel plating	(B) Tin plating
(C) Copper plating	(D) Zinc plating

Question-9
When CuSO₄ is electrolysed using platinum electrodes

(A) copper is liberated at cathode, sulphur at anode	(B) copper is liberated at cathode, oxygen at anode
(C) sulphur is liberated at cathode, oxygen at anode	(D) oxygen is liberated at cathode, copper at anode

Question-10
Among the following series of transition metal ions, the one in which all metal ions have 3d² electronic configuration is : (At no : Ti = 22; V = 23; Cr = 24; Mn = 25)

(A) Ti³⁺, V²⁺, Cr³⁺, Mn⁴⁺	(B) Ti⁺, V⁴⁺, Cr⁶⁺, Mn⁷⁺
(C) Ti⁴⁺, V³⁺, Cr⁶⁺, Mn³⁺	(D) Ti²⁺, V³⁺, Cr⁴⁺,Mn⁵⁺

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Plus 2 Computer Science

ICSE/ISC

Practice in Related Chapters
Cyanide, Isocyanide, Nitro Compounds and Amines
Relative Molecular Mass and Mole
Transition Elements : d and f - Block Elements
Chemical Kinetics
Polymers
Electrochemistry
Coordination Compounds
Chemical Kinetics
Biomolecules
Chemical Equilibria
Carboxylic Acids and Acid Derivatives
Ionic Equilibria

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