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प्रश्न
Select the ion, that would get selectively discharge from the aqueous mixture of the ions listed below :
\[\ce{SO^{2-}_{4}}\], \[\ce{NO^{-}_{3}}\], \[\ce{OH-}\]
उत्तर
OH-
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संबंधित प्रश्न
Give appropriate scientific reasons for During electrolysis of molten lead bromide, graphite anode is preferred to other electrodes.
State one relevant observation for the following:
At the anode, when molten lead bromide is electrolyzed using graphite electrodes.
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) ______.
A solution of caustic soda (NaOH) in water or when fused, conducts an electric current. what is the similarity in these two cases?
Fill in the blank.
As we descend the electrochemical series containing cations, the tendency of the cations to get ________ at the cathode increases.
A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide.
- What kind of salt is sodium argentocyanide?
- Why is it preferred to silver nitrate as an electrolyte?
- State one condition to ensure that the deposit is smooth, firm and long lasting.
- Write the reaction taking place at the cathode.
- Write the reaction taking place at the anode.
Select the correct answer from the choices a,b,c and d which are given. Write only the letter corresponding to the correct answer.
A compound which liberates reddish brown gas around the anode during the electrolysis in its molten state is:______________
Classify the following substance:
Carbon tetrachloride
Classify the following substance:
Dilute hydrochloric acid
Classify the following substance:
Sodium acetate
