CHEMCO - Advanced Training for Chemical Tanker Cargo Operations Exit Exam Questions - Set 15

Question 1

A bee sting is acidic. Which household substance will neutralise a bee sting?

Accepted Answer

A: damp bicarbonate of soda pH8

Answer

B: damp common salt pH7

Answer

C: lemon juice pH5

Answer

D: vinegar pH4

Question 2

The complex group of liquid cargoes that includes alcohols, ketones, glycols, esters, ethers, aromatic hydrocarbons, chlorinated hydrocarbons, etc. are known as

Accepted Answer

A: Solvents and Chemicals

Answer

B: White Oil

Answer

C: Non-petroleum oil

Answer

D: Other chemicals

Question 3

In solid solution, solute can be _______

Accepted Answer

A: Liquid and Gas

Answer

B: Liquid or gas

Answer

C: Only solid

Answer

D: Only liquid

Question 4

Mixture of two or more substance in which composition can vary within a limit is called -------------------solution.

Accepted Answer

A: Homogenous

Answer

B: Heterogenous

Answer

C: Nonvenomous

Answer

D: Colloids are homogeneous mixtures where the particles are small enough that they stay suspended.

Question 5

Which statement does not describe a property of a weak acid in solution?

Accepted Answer

B: It has a pH of between 8 and 9.

Answer

A: It forms a salt with sodium hydroxide.

Answer

C: It is only partly dissociated into ions.

Answer

D: It reacts with sodium carbonate to give off carbon dioxide.

Question 6

Lube oils and additives group of cargoes (excluding halogenated, phosphated, and ester types) usually poses no problems for carriage in coated cargo tanks, but contamination of cargo may be a problem which requires

Accepted Answer

D: Thorough cleaning and drying of tanks before loading

Answer

A: Thorough venting of tanks during carriage

Answer

B: Thorough cleaning and drying of tanks after discharging

Answer

C: Thorough inerting of tanks before loading

Question 7

When does an atom form ions ?

Accepted Answer

B: When atoms lose electrons they become negatively charged ions and are named cations

Answer

A: Ions are formed when atoms lose or gain electrons

Answer

C: When atoms gain electrons they are negatively charged and are named anions.

Answer

D: The number of electrons in an ion is different from the number of protons, thus ion does have an overall electric charge.

Question 8

When CO2 is passed through, lime water, milkiness is formed is due to :

Accepted Answer

A: CaCO3- Calcium Carbonate

Answer

B: Ca(OH)2- Calcium Hydroxide

Answer

C: Ca(HCO3)2- calcium bi-carbonate

Question 9

The reaction which absorbs the chemical energy is,

Accepted Answer

D: Endothermic reaction

Answer

A: Forward reaction

Answer

B: Reverse reaction

Answer

C: Exothermic reaction

Question 10

Cargoes should not be loaded into a tank that is not specially for that purpose; if it exceeds normal atmospheric pressure at

Accepted Answer

D: 37.8 Deg C (100 Deg F)

Answer

A: 60.0 Deg C (140 Deg F)

Answer

B: 15.6 Deg C (60 Deg F)

Answer

C: 25.0 Deg C (77 Deg F)

Question 11

Colder liquids hold more _________ than warmer liquid.

Accepted Answer

A: Gases

Answer

B: Liquid

Answer

C: Pressure

Answer

D: Water

Question 12

In exothermic reactions heat is released due to ______ taking place in them.

Accepted Answer

D: Chemical reaction

Answer

A: Cyclic reaction

Answer

B: Irreversible reaction

Answer

C: Physical reaction

Question 13

The system which contains uniform or same physical state of its matter is a

Accepted Answer

A: Homogeneous system

Answer

B: Hetrogeneous system

Answer

C: Mixture

Answer

D: Unisystem

Question 14

which technique is used to remove impurities from organic solution

Accepted Answer

A: Filtration

Answer

B: Evaporation

Answer

C: Sublimation

Question 15

In exothermic reactions, the amount of energy required for a chemical reaction is

Accepted Answer

C: Less than the total energy released

Answer

A: Equal to the the total energy released

Answer

B: Greater than the total energy released

Answer

D: Zero

Question 16

In liquid solution, solvent is _______

Accepted Answer

B: liquid

Answer

A: solid

Answer

C: gas

Question 17

The colour of the pH paper strip turned red when it was dipped into a sample. The sample could be:

Accepted Answer

D: dil. HCI acid

Answer

A: dil. Na2CO3 solution

Answer

B: tap water

Answer

C: dil. NaOH solution

Question 18

Which reactants could be used safely to prepare potassium chloride?

Accepted Answer

A: aqueous potassium hydroxide and dilute hydrochloric acid

Answer

B: aqueous potassium sulphate and aqueous sodium chloride

Answer

C: potassium and aqueous sodium chloride

Answer

D: potassium and dilute hydrochloric acid

Question 19

Modified epoxy or zinc silicate coated tanks may be required to carry some

Accepted Answer

C: Unleaded Gasolines

Answer

A: Lub oils

Answer

B: Vegitable oils

Answer

D: Animal oils

Question 20

______ is the process of separating any substance from its solution by removing water.

Accepted Answer

B: Evaporation

Answer

A: Distillation

Answer

C: Filtration

Question 21

The product of coefficient of viscosity, surface area and the velocity difference between layers of flowing liquid is

Accepted Answer

B: Force of friction between liquid layers

Answer

A: Viscosity of Liquid

Answer

C: Velocity of the fluid

Answer

D: Vapor pressure of liquid

Question 22

The reaction which releases the chemical energy is

Accepted Answer

C: Exothermic reaction

Answer

A: Forward reaction

Answer

B: Reverse reaction

Answer

D: Endothermic reaction

Question 23

Some of these Solvents and Chemicals products require extreme care in the choice of

Accepted Answer

C: Tank coating and cargo handling

Answer

A: Tank material

Answer

B: Tank construction

Answer

D: Type of cargo pumps

Advanced Training for Chemical Tanker Cargo Operations (CHEMCO) (Set 15)

A bee sting is acidic. Which household substance will neutralise a bee sting?

Questions in CHEMCO Set 15

Question Discussion & Notes

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