Advertisements
Advertisements
प्रश्न
Choosing only words from the following list, write down the appropriate words to fill in the blanks (a) to (e) below:
anions, anode, cathode, cations, electrode, electrolyte, nickel, voltameter.
The electroplating of an article with nickel requires an (a) ______ which must be a solution containing (b) ______ ions. The article to be plated is placed as the (c) ______ of the cell in which the plating is carried out. The (d) ______ of the cell is made from pure nickel. The ions that are attracted to the negative electrode and discharged are called (e) ______.
उत्तर
The electroplating of an article with nickel requires an electrolyte which must be a solution containing nickel ions. The article to be plated is placed as the cathode of the cell in which the plating is carried out. The anode of the cell is made from pure nickel. The ions that are attracted to the negative electrode and discharged are called cations.
APPEARS IN
संबंधित प्रश्न
Classify the following substance:
Ammonium chloride
Give reasons as to why - the electrolysis of acidulated water is considered to be an example of catalysis.
Fill in the blank from the choices given below :
In covalent compounds, the bond is formed due to the ______ of electrons.
During the electrolysis of copper (II) sulphate solution using platinum as cathode and carbon as anode:
- What do you observe at the cathode and at the anode?
- What change is noticed in the electrolyte?
- Write the reactions at the cathode and at the anode.
Which of these will act as a non-electrolyte?
Name the product formed at the anode during the electrolysis of acidified water using platinum electrodes
Name the metallic ions that should be present in the electrolyte when an article made copper is to be electroplated with silver
Select the ion, that would get selectively discharge from the aqueous mixture of the ions listed below :
Pb2+, Ag+, Cu+
A strip of copper is placed in four different colourless salt solutions. They are KNO3, AgNO3, Zn(NO3)2 and Ca(NO3)2. Which one of the solutions will finally turn blue?
Classify the following substance:
Dilute hydrochloric acid