Questions

Oxidation state of iron in [Fe(H₂O)₅NO]SO₄ is

Options

(a) 1 (b) 2 (c) 3 (d) 4

Correct Answer:

1

Explanation:

No explanation available. Be the first to write the explanation for this question […]

Permanganate ion changes to ….. in acidic medium

Options

(a) MnO₄²⁻ (b) Mn²⁺ (c) Mn³⁺ (d) MnO₂

Correct Answer:

Mn²⁺

Explanation:

No explanation available. Be the first to write the explanation for […]

In the laboratory, manganese(II) salt is oxidised to permanganate ion in aqueous solution by

Options

(a) hydrogen peroxide (b) conc.nitric acid (c) peroxydisulphate (d) dichromate

Correct Answer:

peroxydisulphate

Explanation:

No explanation available. Be […]

The acidic, basic or amphoteric nature of Mn₂O₇, V₂O₅ and CrO are respectively

Options

(a) acidic, acidic and basic (b) basic,amphoteric and acidic (c) acidic,amphoteric and basic (d) acidic , basic and amptoteric

[…]

which of the following ions has the maximum magnetic moment

Options

(a) Sc³⁺ (b) Ti³⁺ (c) Fe³⁺ (d) V³⁺

Correct Answer:

Fe³⁺

Explanation:

No explanation available. Be the first to write the explanation […]

Which of the following pairs of transition metal ions are the stronger oxidising agents in aqueous solution

Options

(a) V²⁺ and Cr²⁺ (b) Ti²⁺ and Cr²⁺ (c) Mn³⁺ and Co³⁺ (d) V²⁺ and […]

Fine the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25

Options

(a) 3.9 B.M. (b) 4.49 B.M. (c) 5.9 B.M. (d) 6.9 B.M.

Correct Answer:

5.9 […]

Vanadium (III) oxide is a strong

Options

(a) drying agent (b) oxidising agent (c) reducing agent (d) wetting agent

Correct Answer:

reducing agent

Explanation:

No explanation available. Be the first to write the […]

In the brown ring test for the nitrate ion, the brown colour is due to

Options

(a) [Fe(H₂O)₅NO]²⁺ (b) [Fe(H₂O)₅NO]³⁺ (c) [Fe(H₂O)₆]⁺ (d) [Fe(H₂O)₅NO₂]²⁺

Correct Answer:

[Fe(H₂O)₅NO]²⁺

Explanation:

When an aqueous solution of […]