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Olympiad Test: Chemical Effects Of Electric Current - 1 - Free MCQ


MCQ Practice Test & Solutions: Olympiad Test: Chemical Effects Of Electric Current - 1 (10 Questions)

You can prepare effectively for Class 8 Science Olympiad Class 8 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Olympiad Test: Chemical Effects Of Electric Current - 1". These 10 questions have been designed by the experts with the latest curriculum of Class 8 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 10

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Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 1

A body can be charged by

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 2

Adding solute salt to water

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 3

Which of these is not true?

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 4

The gold-leaf electroscope is used to

Detailed Solution: Question 4

The gold leaf electroscope has been used by physicists for hundreds of years. It indicates the presence and nature of a charge through the application of charge to a metal top plate connected through a stem to two pieces of gold leaf. The movement of one piece of gold leaf away from the other shows that the electroscope is charged.

Hence, a gold leaf electroscope can detect the presence of charge and test the kind of charge.

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 5

During electroplating, the metal on which electroplating is to be done should be

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 6

Chromium plating is done on objects like

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 7

The process of deposition of a layer of any desired metal on another metallic object by means of electricity is called

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 8

Which of these metals will you electroplate on iron to protect it from rusting and to make it shine?

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 9

The decomposition of an electrolyte on passing electric current is called

Olympiad Test: Chemical Effects Of Electric Current - 1 - Question 10

In which of these is current not conducted by electrons?

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