EASY
8th CBSE
IMPORTANT
Earn 100

Normal water conducts electricity, whereas distilled water does not. Explain.

Important Questions on Chemical Effects of Current

MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 3
Explain with the help of an activity that liquid conducts electricity.
HARD
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 4
What is electroplating? What are its uses? What are its drawbacks?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 5
Rohan wants to electroplate an iron nail with copper. Explain the steps of doing so using the technique of electroplating.
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 6
Explain the uses of electroplating.
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 7
How does the process of electrolysis help in the extraction of metals?
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 7
How does the process of electrolysis help in the purification of metals?
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 1
Is air a good or bad conductor of electricity? Give reasons.
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 18 - Chemical Effects of Current>EXERCISE>Q 2
What would happen if the electric current is allowed to flow in a freshly cut potato?