Class 8 Science Chapter 14 MCQ (Multiple Choice Questions) of Chemical Effects of Electric Current updated for new academic session 2022-2023. These multiple choice objective quiz will help the students in the preparation of school tests and terminal exams. Prepare the entire chapter 14 of class 8 science using these objective questions with answers. All the questions are important as well as useful for a student of standard 8. These questions are prepared from the class 8 science chapter 14 NCERT Textbook only.
Class 8 Science Chapter 14 MCQ for 2022-2023
|Chapter: 14||Chemical Effects of Electric Current|
|Contents:||MCQ Online Tests with Explanation|
MCQ Tests with Answers for Class 8 Science Chapter 14
An electric current can produce:
In an activity to check the conduction of electricity through two liquids labelled A and B by using a bulb, it is observed that the bulb glows brightly for liquid B while it glows very dimly for liquid A.
Boojho and Paheli performed experiment taking similar bulbs and cells but two different solution A and B respectively. They found that the bulb in the set-up A glows more brightly as compared to that of the set of B. You would conclude that:
Which of the following does not conduct electricity?
In a science quiz competition, Payel is asked a question where she had to choose the statement which was/were correct?
Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory:
Which of the following metals are produced by the electrolysis of their molten compounds?
Read the following sentences carefully, and choose the incorrect one:
Payal is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Payal wants to take help from you:
When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates:
Which of the following compounds is manufactured by using the chemical effect of electric current?
Which one of the following solutions will not conduct electricity?
Consider the following statements and choose the incorrect one:
In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?
Which of the following metals is used in electroplating to make objects appear shining?
Electrolytes conduct electricity due to the movement of:
The chemical reaction brought about by an electric current may produce one or more effects. Choose the correct statements:
Consider the following statements and choose the correct one:
The decomposition produced by passing current through a conducting liquid is called:
In the purification of an impure metal by using the chemical effect of electric current or electrolysis, we should not take:
Which of the following effects is not produced by the chemical reactions of brought about by an electric current?
Which of the following can be electroplated with chromium?
The device which can be used to detect very small current flowing in an electric circuit is:
If plus sign (+) denotes the positive electrode and minus sign (-) denotes the negative electrode, then which of the following statement is correct for an iron spoon to be copper plated?
For electroplating an iron object with copper metal or copper plating, we should not follow the method is or are:
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