Advertisements
Advertisements
प्रश्न
Electrolysis is used to obtain pure metal from impure metal.
पर्याय
Right
Wrong
Advertisements
उत्तर
Electrolysis is used to obtain pure metal from impure metal- Right
APPEARS IN
संबंधित प्रश्न
What is aqua-regia?
Name one method for the refining of metals.
Name any five metals which are purified by electrolytic refining method.
Explain how the following metals are obtained from their compounds by the reduction process:
(i) Metal M which is in the middle of the reactivity series.
(ii) Metal N which is high up in the reactivity series.
Give one example of each type
Draw a neat labelled diagram.
Froth floatation method.
Draw a neat labelled diagram.
Electrolytic reduction of alumina.
Draw a neat labelled diagram.
Hydraulic separation method.
Name one metal each occurring as :
A carbonate
Name one metal each occurring as :
An oxide
Ionic compounds are electrically _______.
The lightest liquid metal is ____________.
Bauxite is mixed with cryolite so as to
(i) reduce its melting point
(ii) increase its electrical conductivity
(iii) molten cryolite acts as a solvent
(iv) increase its melting point
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
(i) Au
(ii) Cu
(iii) Na
(iv) K
An electrolytic cell consists of
- positively charged cathode
- negatively charged anode
- positively charged anode
- negatively charged cathode
Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?
Which one of the following figures correctly describes the process of electrolytic refining?
What are the constituents of solder alloy? Which property of solder makes it suitable for welding electrical wires?
Identify the terms for the following:
The electrode where reduction takes place.
Answer the following question with reference to the electrorefining of copper:
What do you observe at the cathode?
