Advertisements
Advertisements
प्रश्न
What are the constituents of solder alloy? Which property of solder makes it suitable for welding electrical wires?
उत्तर
The main constituents of solder alloy are tin and lead in a ratio of 60 : 40. Solder alloy has a low melting point of 188° C, this low melting point makes it suitable for soldering electrical wires.
APPEARS IN
संबंधित प्रश्न
What is meant by refining of a metal? Name the most widely used method for the refining of impure metals obtained by various reduction processes. Describe this method with the help of a labelled diagram by taking the example of any metal.
Name any five metals which are purified by electrolytic refining method.
Draw a neat labelled diagram.
Froth floatation method.
Draw a neat labelled diagram.
Hydraulic separation method.
Name one metal each occurring as :
A sulphine
Electrolysis is used to obtain pure metal from impure metal.
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
Which one of the following figures correctly describes the process of electrolytic refining?
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?
