Some Basic Concepts of Chemistry Extra Questions. We covered all the Some Basic Concepts of Chemistry Extra Questions in this post for free so that you can practice well for the exam.
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Some Basic Concepts of Chemistry Extra Objective Questions for Students
Which one of the following transition metal ions has the lowest density?
(A) Copper
(B) Nickel
(C) Scandium
(D) Zinc
Option c – Scandium
Which of the following oxide of manganese is amphoteric?
(A) MnO₂
(B) Mn2O3
(C) Mn207
(D) MnO
Option a – MnO₂
The last electron in d-bloc – elements
(A) (n-1)d
(B) nd
(C) np
(D) (n-1)s
Option a – (n-1)d
Mercury sticks to the surface of the glass when it comes in contact with
(A) Hg₂O
(B) HNO3
(C) O3
(D) Grease
Option c – O3
Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the statements is incorrect for this reaction?
(A) Cu2l2 is formed
(B) Cul2 is formed
(C) Na2S2O3 is oxidized
(D) Evolved I2 is reduced
Option b – CuI2 is formed
Calomel (Hg2Cl2) in reaction with ammonium hydroxide gives
(A) HgNH₂Cl
(B) NH2-Hg – Hg – Cl
(C) Hg2O
(D) HgO
Option a – HgNH₂Cl
Amongst the following, the lowest degree of paramagnetism per mole of the compound at 298 K will be shown by
(A) MnSO4 4H₂O
(B) CuSO4 5H₂O
(C) FeSO4 6H2O
(D) NiSO4 6H₂O
Option b – CuSO4 5H₂O
Transition metal with low oxidation number will act as
(A) a base
(B) an acid
(C) an oxidizing agent
(D) none of these
Option b – an acid
Iron loses ferromagnetic property at
(A) Curie point
(B) Boiling point
(C) Melting point
(D) 1500 K
Option a – Curie point
Which of the following is not the characteristic of zinc?
(A) It is a volatile metal
(B) It dissolves in alkali forming sodium zincate
(C) It is brittle at very high temperatures
(D) Zinc dust is used as a reducing agent
Option c – It is brittle at very high temperatures
Formation of the interstitial compound makes the transition metal
(A) more soft
(B) more ductile
(C) more metallic
(D) more hard
Option d – more hard
If a non-metal is added to the interstitial sites of a metal, then the metal becomes
(A) softer
(B) less tensile
(C) less malleable
(D) more ductile
Option c – less malleable
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