Question 1

Sheena is correct when she uses a fire extinguisher bearing the fire classification that is made for fires on wooden cabinets and shelves with documents inside it?
A)Fire classification A
B)Fire classification B
C)Fire classification C
D)Fire classification D

Accepted Answer

Fire classification A
Fire classification A is generally used on ordinary combustibles such as wood and paper. The other fire classifications have other purposes.

Question 2

In which classification does fire brought about by faulty electrical wiring of the fixation machine belong?
A)Fire classification A
B)Fire classification B
C)Fire classification C
D)Fire classification D

Accepted Answer

Fire classification C
Fie classification C generally denotes fire that originated through faulty electrical wiring and the malfunctioning of any electrical equipment. The other fire classifications have other purposes or nature of fire.

Question 3

Which of the following is not a precaution to be observed by Jaz regarding fire extinguishers?
A)Do not incinerate the container even when empty.
B)Do not place on wet places
C)Do not place under direct sunlight
D)Do not store the fire extinguisher in the corner of a room

Accepted Answer

Do not store the fire extinguisher in the corner of a room
All of the following choices are correct precautions to observe with respect to fire extinguishers except for storing the fire extinguisher in the corner of a room. This is incorrect because placing and storing a fire extinguisher in a corner can be done. However, proper precaution is to store the fire extinguisher at a height of not lower than one meter from the floor.

Question 4

How many micrometers should a histotechnician cut a tissue that is to be cut in 0.5 micra of thickness?
A)0)5 um
B)50 micometers
C)500 mcm
D)0)005 micrometers

Accepted Answer

0.5 um
One small unit of measurement used in the clinical laboratory is the micrometer. The old usage of the unit is in micron and takes the plural form of microns or micra. Therefore, 0.5 micra is equivalent to 0.5 microns, and it is also the same as 0.5 micrometers or 0.5 um. All the other choices are inaccurate conversions of the unit specified in the question.

Question 5

As a histotechnician, one must know the basic knowledge in handling hazardous histological chemicals. As a rule of the thumb, diluting acids should be done correctly using which of the following procedure?
A)When diluting a concentrated acid, pour water into the acid and this should be done under the chemical fume hood.
B)When diluting a concentrated acid, pour the acid into the water and this should be done under the chemical fume hood.
C)When diluting a concentrated acid, pour the acid into the water and this should be done in the sink.
D)When diluting a concentrated acid, pour the acid into the water. This should be done on a place in the laboratory where nobody is present.

Accepted Answer

When diluting a concentrated acid, pour the acid into the water and this should be done under the chemical fume hood.
As a rule of the thumb, when diluting a concentrated acid, pour the acid into the water. This should be done inside the chemical fume hood to avoid splashing of the chemicals and to prevent hazardous chemical fumes from being inhaled that can dangerous to the laboratory personnel.

Quiz 2: Laboratory Operations

Sheena is correct when she uses a fire extinguisher bearing the fire classification that is made for fires on wooden cabinets and shelves with documents inside it?

In which classification does fire brought about by faulty electrical wiring of the fixation machine belong?

Which of the following is not a precaution to be observed by Jaz regarding fire extinguishers?

How many micrometers should a histotechnician cut a tissue that is to be cut in 0.5 micra of thickness?

As a histotechnician, one must know the basic knowledge in handling hazardous histological chemicals. As a rule of the thumb, diluting acids should be done correctly using which of the following procedure?