Advertisements
Advertisements
प्रश्न
Write the equation for the reaction of zinc with following: Sodium hydroxide solution
उत्तर
\[\ce{Zn + 2NaOH -> Na2ZnO2 + H2}\]
APPEARS IN
संबंधित प्रश्न
Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis ?
How do the properties of an alloy differ from alloy constituents?
Name an alloy of copper in electrical appliances or household vessels.
Name the following:
The rocky impurities present in an ore.
Name the following:
The chief metal present in magnalium and duralumin
Give reason for the following:
A neutral gas other than oxygen is formed at the anode during electrolysis of fused alumina.
Name one metal occurring as a : Oxide ore
X | Y | |
Normal Electronic Configuration | 2, 8, 7 | 2, 8, 2 |
Nature of Oxide | Dissolves in water and truns blue litmus red. | Very low solubility in water. Dissolves in hydrochloric acid. |
Tendency for Oxidising and reducing reactions | Tends to oxidise elements and compound. | Tends to act as a reducing agent. |
Electrical and Thermal Conductivity | Very poor electrical conductor. Poor thermal conductivity. |
Good electrical conductor. Good thermal conductor. |
Tendency to form Alloys and Amalgams | No tendency to form alloys. | Forms alloys. |
Using the information above, complete the following:
- _________ is the metallic element.
- Metal atoms tend to have a maximum of ________ electrons in the outermost energy level.
- Non-metallic elements tend to form _________ oxides while metals tend to form _______ oxides.
- Non-metallic elements tend to be ______ conductors of heat and electricity.
- Metals tend to _______ electrons and act as ________ agents in their reactions with elements and compounds.
The metals zinc and tin are present in the alloy
The main ore used for the extraction of iron is ______.