Which one of the following is used in earth pit?
A. Salt and charcoal
B. Graphite and magnesium
C. Graphite and Silver
D. Aluminum and Iron
Answer:A
Which one of the following is used in earth pit?
A. Salt and charcoal B. Graphite and magnesium C. Graphite and Silver D. Aluminum and Iron
Explanation: Salt and charcoal are added in the earth pit for improving conductivity.