The number of moles of KMnO₄ reduced by one mole of KI in alkaline medium is
Options
(a) one (b) two (c) five (d) one fifth
Correct Answer:
two
Explanation:
No explanation available. Be […]
Among the following pairs of ions, the lower oxidation state in aqueous solution is more stable than the other in
Options
(a) TI⁺ , TI³⁺ (b) Cu⁺ , Cu²⁺ (c) Cr²⁺ , Cr³⁺ […]
The basic character of the transition metal monoxides follows the order (Atomic nos. Ti = 22, V = 23, Cr = 24 , Fe = 26)
Options
(a) VO > CrO > TiO […]
Which of the following elements are analogous to the lanthanides
Options
(a) Carbides (b) Borides (c) Actinides (d) Hydrides
Correct Answer:
Actinides
Explanation:
No explanation available. Be the first to write the explanation […]
Which of the following shows maximum number of oxidation states
Options
(a) Cr (b) Fe (c) Mn (d) V
Correct Answer:
Mn
Explanation:
No explanation available. Be the first to write the explanation […]
Which of the following compounds is known as white vitriol
Options
(a) ZnSO₄.7H₂O (b) CaCO₄.2H₂O (c) Na₂SO₄.7H₂O (d) MgSO₄.7H₂O
Correct Answer:
ZnSO₄.7H₂O
Explanation:
No explanation available. Be the first to write the explanation […]
General electronic configuration of lanthanides is
Options
(a) (n – 2) f¹⁻¹⁴ (n – 1) s²p⁶d⁰⁻¹ ns² (b) (n – 2) f¹⁰⁻¹⁴ (n – 1) d⁰⁻¹ ns² (c) (n – 2)f⁰⁻¹⁴ (n – 1)d¹⁰ […]
Which of the following is not an actinide
Options
(a) Uranium (b) Curium (c) Californium (d) Erbium
Correct Answer:
Erbium
Explanation:
No explanation available. Be the first to write the explanation for this […]
Which one of the following elements constitutes a major impurity in pig iron
Options
(a) Sulphur (b) Oxygen (c) Silicon (d) Carbon
Correct Answer:
Carbon
Explanation:
No explanation available. Be the first to […]
Lanthanides and actinides resemble in
Options
(a) electronic configuration (b) oxidation state (c) ionization energy (d) formation of complexes
Correct Answer:
oxidation state
Explanation:
No explanation available. Be the first to write […]
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