Which of the following non-metals can be electroplated with copper?

A weak electrolyte is a weak conductor of electricity because it contains lesser number of ions. Which of the following is a weak electrolyte?

Which one of the following solutions is taken as an electrolyte if we want to electroplate an iron object with copper metal?

Which of the following statements is/are false: a. A solution of sulphuric acid or hydrochloric acid in water conducts electricity. b. The materials that do not allow electric current to pass through them are called poor conductors of electricity. c. A solution of copper sulphate or sodium chloride in water will not conduct electricity.

Which of the following metals are produced by passing electric current through their compounds in molten state?

A. Aluminium

B. Copper

C. Magnesium

D. Iron

Which of the following solutions is a good conductor of electricity?

Which of the following statements is/are false: a. In a solid like copper metal, electricity is carried by electrons but in a liquid like copper sulphate solution, electricity is carried by copper and sulphate ions. b. If electricity is passed through a solid or a liquid, then no chemical change takes place. c. The liquids which conduct electricity are called conducting liquids.

Which of the following is/are methods to make distilled water conduct electricity? a. By dissolving some common salt in it. b. By adding acid like dilute sulphuric acid in it c. By adding base like sodium hydroxide in it.

Which of the following statements is/are false: a. Electrolytes are better conductors of electricity than the metals. b. An arrangement with two electrodes, that is kept in a conducting liquid in a vessel is called an electrolytic cell. c. A strong electrolyte is a solution which conducts electricity very well because it contains a lot of ions in it.

If an electric current is passed through acidified water by using carbon electrodes, then a chemical reaction takes place to form ________________ and oxygen.

Which of the following is not used for electroplating any metal?

Match the following:

Which of the following is/are the applications of the chemical effects of electric current in industries? a. Electroplating of metals b. Purification of metals c. Production of chemical compounds d. Decomposing chemical compounds

Which of the following is the strongest electrolyte?

Which of the following is/are the conditions that should be taken into consideration while electroplating? a. The metal object on which electroplating is to be done should be made using the negative electrode. b. The metal whose layer is to be deposited should be made using the positive electrode. c. A water soluble salt of the metal should be deposited if taken as an electrolyte.

Which of the following statements is/are false? a. The chemical decomposition produced by passing an electric current through a conducting liquid is called electrolysis. b. Sodium metal is produced by the electrolysis of molten sodium carbonate. c. Fresh fruits and vegetables conduct electricity to some extent due to the presence of various salt solutions in them.