EASY
8th CBSE
IMPORTANT
Earn 100

Explain the method of copper plating an iron nail.

Important Questions on Chemical Effects of Electric Current

MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 2
What is an electrolytic cell? Draw its schematic diagram.
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 3
Draw a schematic diagram of the set-up for electrorefining copper.
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 4
What are electrodes, and how do they function?
HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 5
Explain the working of a simple dry cell.
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 1
When you dissolve salt in water, it conducts electricity whereas salt crystals or powder does not conduct electric current. Explain why. (Hint: Formation of ions in the solution).
MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Q 2
In case of a fire, firemen shut off the electricity supply for the area before they use the water hoses to put out the fire. Why? (Hint: Think of conductivity of water)
EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>EXERCISE>Identify the chemical process shown in the following diagram and label the set-up

Identify the chemical process shown in the following diagram and label the set-up.

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EASY
8th CBSE
IMPORTANT
Science Now 8>Chapter 13 - Chemical Effects of Electric Current>WORKSHEET>Label the given diagram of a dry cell

Label the given diagram of a dry cell.

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