Related Questions
Cinnabar is an ore of:
Lead
Zinc
Silver
Mercury
Which statement is not correct?
reacts with
Carbonyl complexes are usually formed with transition metals
All transition metals form mono metallic carbonyls
The decomposition of to give Ni is used in the extraction of Ni by Mond’s process
One of the following is false for Hg:
It is liquid at room temperature.
It is dense.
It does not readily form Hg²⁺.
It is a good conductor of electricity.
A reagent that can separate Fe from Zn is:
NaOH
HCl
In the dichromate dianion :
4 Cr—O bonds are equivalent
6 Cr—O bonds are equivalent
all Cr—O bonds are equivalent
all Cr—O bonds are equivalent
Pick out the correct statements from the following.
I. Cobalt (III) is more stable in octahedral complexes.
II. Zinc forms coloured ions or complexes.
III. Most of the -block elements and their compounds are ferromagnetic.
IV. Osmium shows (VIII) oxidation state.
V. Cobalt (II) is more stable in octahedral complexes.
1 and 2
1 and 3
2 and 4
1 and 4
An element which is highly toxic for plants and animals is:
Au
Mn
Hg
Ca
The form of iron having the highest carbon content is
Cast iron
Wrought iron
Stainless steel
Mild steel
Transition metals in their compounds show:
Ionic bonds
Covalent bonds
Ionic and covalent bonds
Ionic and coordinate bonds
The colour of an electrolyte solution depends on:
The nature of the anion
The nature of the cation
The nature of both the ions
The nature of the solvent
