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Len [333]
3 years ago
13

Hardness in groundwater is due to the presence of metal ions. True or False

Physics
1 answer:
choli [55]3 years ago
7 0

Answer:

False

Explanation:

Water hardness in most groundwater is due to a natural occurrence caused by the weathering of  limestone, sedimentary rock and calcium bearing minerals. Hardness can also  occur locally in groundwater from chemical and mining industry effluent or  excessive application of lime to the soil in agricultural areas.

Limestone is not a metallic element or metallic alloy, although it does contain the metallic element calcium, it is not formed by the same processes as metals are.

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<em />

<u>The difference between them:</u>

A transformer is a static device which transfers a.c electrical power from one circuit to the other at the same frequency, but the voltage level is usually changed. For economical reasons, electric power is required to be transmitted at high voltage whereas it has to be utilized at low voltage from a safety point of view. This increase in voltage for transmission and decrease in voltage for utilization can only be achieved by using a step-up and step-down transformer.

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