In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this.

A.VERIFIED ANSWERfact-checked by tutors

Soln:

In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area because water sprayed from the hose might conduct electricity which may come in contact with the electrical appliances, which increases the chance of electricity passing through the wire. This may hurt the firemen.

Suggested Q&A

SCIENCE · CLASS 8

ScienceCLASS 8
List the seven basic practices of crop production in their correct sequence.
ScienceCLASS 8
What is the main difference between a 'godown' and a 'silo' for grain storage?
ScienceCLASS 8
Explain how a sprinkler system works and for what type of terrain it is most suitable.
ScienceCLASS 8
What is the primary purpose of preparing the soil before sowing seeds?A. To add nutrients to the soil.B. To loosen the soil, allowing for better root penetration.C. To remove all weeds from the field.D. To compact the soil for better water retention.
ScienceCLASS 8
Fill in the blanks to complete the following paragraph. The name of the product formed in the reaction of sulphur and is sulphur dioxide gas. When sulphur dioxide is dissolved in , sulphurous acid is formed. The sulphurous acid turns litmus paper to Generally oxides of are acidic in nature. After completing the paragraph write two questions which you can raise on the basis of this information.
ScienceCLASS 8
Some of the following statements are incorrect. Find the incorrect statements and correct them. (a) The property of metals by virtue of which they can be drawn into wires is called ductility. (b) Metals are good conductor of electricity but poor conductor of heat. (c) Articles made of metals produce ringing sound when struck hard. (d) Oxides of non-metals and metals are acidic in nature. (e) A less reactive metal replaces a more reactive metal from its salt solution in water.