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प्रश्न
For the electro-refining of copper: Write the reaction that takes place at the anode
उत्तर
Reaction at anode -
Oxidation reaction : `Cu -> Cu^(+2) + 2e^(-)`
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संबंधित प्रश्न
Write any three differences between metals and non-metals with respect to their physical properties.
The electronic configurations of four particles A, B, C and D given below:
| A | 2, 8, 8 |
| B | 2, 8, 2 |
| C | 2, 6 |
| D | 2, 8 |
Which electronic configuration represents:
(i) magnesium atom?
(ii) oxygen atom?
(iii) sodium ion
(iv) chloride ion?
Name a metal which is lighter than water :
State two important uses of following non-metal
Uses of graphite
Name:
a non metal which conducts electricity
Write scientific reason.
The stainless steel vessels in Kitchen have copper coating on the bottom.
From the list of characteristics given below, select the five which are relevant to non-metals and their compounds:
- Ductile
- Conduct electricity
- Brittle
- Acidic Oxides
- Basic Oxides
- Discharged at anode
- Discharged at cathode
- Ionic chlorides
- Covalent chlorides
- Reaction with dilute sulphuric acid yields hydrogen
- 1, 2 or 3 valence electrons
- 5, 6, 7 valence electrons
(Write the five letters corresponding to the correct characteristics).
Give reason for the following:
Metals form cations while non-metals form anions.
Brass : Aluminium and zinc : : Bronze : ______
Reason out
Mercury is the only metal that is liquid at room temperature.
