Water with a pH much lower than 7.0 is ____ and can produce corrosive effects on metal equipment and pipes

A) acidic
B) alkaline
C) neutral
D) flavored


A

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Most of the power for operating agricultural machinery is supplied by ____________________

Fill in the blank(s) with the appropriate word(s).

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It is possible for zinc crystals to undergo very large plastic strains at temperatures below room temperature. This is not true in polycrystalline zinc, which normally shows a very low ductility at sub?ambient temperatures. Give an explanation for this face based on the mechanical properties of zinc.

What will be an ideal response?

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Answer the following statement(s) true (T) or false (F)

A PEM fuel cell needs to operate at very high temperatures.

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In a water-cooled condenser, what do an increase in head pressure and a decrease in temperature difference across the condenser indicate?

A) Low-pH water B) Low water flow C) Scaling on tubing D) Undersized condenser

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