Q. What is the percentage of the world lacking access to toilets?

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Q. Corrosion is the deterioration of materials by chemical interaction with their environment.

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Q. Which is the most widely used material in water conduits?

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Q. A loss in mechanical strength is due to ______

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Q. The corroding piece of metal is described as a “mixed electrode”.

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Q. What is pH below which pH increases?

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Q. Increase in __________ concentration usually gives an increase in corrosion rate.

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Q. Stainless steel is protected by _______

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Q. What is pH range for oxygen removal?

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Q. ______ are classified as dangerous inhibitors.

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Q. Which ions are used as cathodic inhibitors?

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Q. What is the reduced potential required to prevent the corrosion of steel?

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Q. Galvanizing is the process of applying _______ over steel.

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Q. pH sensor must remain clean for an accurate reading.

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Q. _______ is suited for open channel monitoring applications.

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Q. How many categories of process variables are present?

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Q. Which of the following are a mechanical means of signal transmission?

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Q. Which of the following are a pneumatic means of signal transmission?

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Q. Tone is an electronic means of the signal transmission device.

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Q. Which of the following is not a read out device?

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