In the brown ring test for the nitrate ion, the brown colour is due to
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⁺…
7 years ago
Chemistry
Lanthanide contraction is due to increase in
Lanthanide contraction is due to increase in Options (a) shielding by 4f electrons (b) atomic number (c) effective nuclear charge…
7 years ago
Many transition metals and their compounds exhibit
Many transition metals and their compounds exhibit Options (a) perimagnetic behaviour (b) vander waal's behaviour (c) paramagnetic behaviour (d) diamagnetic…
7 years ago
The term platforming is
The term platforming is Options (a) platinum painting (b) flat sheet of platinum (c) platinum coating (d) platinum used as…
7 years ago
In the electrolytic refining of zinc
In the electrolytic refining of zinc Options (a) graphite is at the anode (b) the impure metals is at the…
7 years ago
All Cu(II) halides are known except the iodide. The reason for it is that
All Cu(II) halides are known except the iodide. The reason for it is that Options (a) iodide is a bulky…
7 years ago
Which one of the following statements about transition elements is incorrect
Which one of the following statements about transition elements is incorrect Options (a) They show variable oxidation states (b) All…
7 years ago
Which of the following is the green coloured powder produced when ammonium
Which of the following is the green coloured powder produced when ammonium dichromate is used in fire works Options (a)…
7 years ago
CrO₃ dissolves in aqueous NaOH to give
CrO₃ dissolves in aqueous NaOH to give Options (a) CrO₄²⁻ (b) Cr(OH)₃⁻ (c) Cr₂O₇²⁻ (d) Cr(OH)₂ Correct Answer: CrO₄²⁻Explanation:No explanation…
7 years ago
On the extraction of iron, the slag produced is
On the extraction of iron, the slag produced is Options (a) CO (b) FeSiO₃ (c) MgSiO₃ (d) CaSiO₃ Correct Answer:…
7 years ago