CPT Chemical Process Fundamentals & Reactions 3

Question 1

What principle is a distillation process based on in chemical manufacturing?

Accepted Answer

Differences in boiling points (volatilities) of liquid components

Answer

Differences in density between liquid components

Answer

Differences in magnetic properties of dissolved compounds

Answer

Differences in electrical conductivity between phases

Question 2

What is polymerization in a chemical process context?

Accepted Answer

Combining many small monomer units into long-chain polymer molecules

Answer

Breaking large molecules into smaller fragments using heat

Answer

Separating mixed gases using membrane filtration

Answer

Converting solid feed material into gaseous products via combustion

Question 3

What is the primary purpose of a scrubber in a chemical or refining process plant?

Accepted Answer

To remove pollutants or contaminants from a gas stream using a liquid

Answer

To increase the pressure of a gas stream before it enters a reactor

Answer

To filter solid particulates from a liquid product stream

Answer

To heat a process stream before it enters a distillation column

Question 4

What critical information is provided by a Safety Data Sheet (SDS) for a chemical used in a process plant?

Accepted Answer

Hazard identification, handling, storage, and emergency response information

Answer

The purchase price and supplier contract terms for the chemical

Answer

The production quota and yield targets for the chemical process

Answer

Calibration procedures for instrumentation measuring the chemical

Question 5

What distinguishes a Brønsted-Lowry acid from a Brønsted-Lowry base?

Accepted Answer

An acid donates protons (H⁺); a base accepts protons

Answer

An acid accepts protons; a base donates protons

Answer

An acid gains electrons; a base loses electrons

Answer

An acid has a pH above 7; a base has a pH below 7

Question 6

What is a redox reaction, and what always occurs during one?

Accepted Answer

A reaction in which one species is simultaneously oxidized and another is reduced

Answer

A reaction involving only acid-base neutralization with no electron transfer

Answer

A reaction that occurs only at elevated temperatures in the presence of oxygen

Answer

A reaction limited to inorganic compounds in aqueous solution

Question 7

What does the flash point of a chemical indicate, and why is it critical for process technicians?

Accepted Answer

The lowest temperature at which vapors above a liquid can ignite when exposed to an ignition source

Answer

The temperature at which a chemical decomposes into its elements

Answer

The maximum pressure a storage vessel can handle before rupturing

Answer

The temperature at which a solid chemical melts to form a liquid