CHEMICAL TECHNICIAN exam {latest 2026
-2027 update} questions and answers
100% correct
The conductivity value of a liquid increases as the temperature decreases as a result
of higher ion mobility.
a. True
b. False - correct answer False
The alkaline effect is the phenomenon where H+ ions in the gel layer of the pH-
sensitive membrane are partly and completely replaced by alkali ions.
a. True
b. False - correct answer True
,In pH measurements, if the solution is acidic, the H+ ions diffuse out of the layer and a
negative charge is established on the outer side of the membrane.
a. True
b. False - correct answer False
Karl Fischer titrator is used to determine viscosity of liquids.
a. True
b. False - correct answer False
For pipettes marked with To Deliver (TD), a small amount of liquid remaining on the tip
should not be blown out.
a. True
,b. False - correct answer True
Cuvettes must be cleaned in an ultrasonic cleaning bath.
a. True
b. False - correct answer False
In operating the centrifuge, opposing tubes must be of equal weights.
a. True
b. False - correct answer True
To ensure that glass wares is properly cleaned, the film of water which adheres to the
inner glass wall of the glass ware as it is emptied must not be uniform.
, a. True
b. False - correct answer False
Class B volumetric glass ware provides the highest accuracy and passes the ASTM
standard specification for laboratory volumetric glass ware.
a. True
b. False - correct answer False
In calibration of burettes, volume reading shall be taken with the eye higher than the
liquid level to avoid parallax error.
a. True
b. False - correct answer False
-2027 update} questions and answers
100% correct
The conductivity value of a liquid increases as the temperature decreases as a result
of higher ion mobility.
a. True
b. False - correct answer False
The alkaline effect is the phenomenon where H+ ions in the gel layer of the pH-
sensitive membrane are partly and completely replaced by alkali ions.
a. True
b. False - correct answer True
,In pH measurements, if the solution is acidic, the H+ ions diffuse out of the layer and a
negative charge is established on the outer side of the membrane.
a. True
b. False - correct answer False
Karl Fischer titrator is used to determine viscosity of liquids.
a. True
b. False - correct answer False
For pipettes marked with To Deliver (TD), a small amount of liquid remaining on the tip
should not be blown out.
a. True
,b. False - correct answer True
Cuvettes must be cleaned in an ultrasonic cleaning bath.
a. True
b. False - correct answer False
In operating the centrifuge, opposing tubes must be of equal weights.
a. True
b. False - correct answer True
To ensure that glass wares is properly cleaned, the film of water which adheres to the
inner glass wall of the glass ware as it is emptied must not be uniform.
, a. True
b. False - correct answer False
Class B volumetric glass ware provides the highest accuracy and passes the ASTM
standard specification for laboratory volumetric glass ware.
a. True
b. False - correct answer False
In calibration of burettes, volume reading shall be taken with the eye higher than the
liquid level to avoid parallax error.
a. True
b. False - correct answer False
