NLN PAX Exam Study Science
Questions And Answers.
1 kilogram (kg) of solid X at 10 degrees C and 1 kg of solid Y at 10 degrees C each absorb 5 joules
of heat energy. The final temperatures of X and Y are 15 degrees C and 20 degrees C,
respectively. Compared to X, Y must have a lower what? - Answer Specific Heat.
A method for determining the blood alcohol content of a subject is to what? - Answer Use a
Breathalyzer.
A person blows his breath into a straw that is placed in limewater. The limewater becomes
cloudy because the person's breath contains what? - Answer Carbon Dioxide.
A student focuses sunlight to a point with a thing converging (convex) lens. Which if these direct
measurements can the student make as a result of this experiment? - Answer The approximate
focal length of the lens.
An unknown gas is more dense than air, does not support combustion, and turns a limewater
solution cloudy. This gas is most probably what? - Answer Carbon Dioxide.
Guard cells which can be found in the leaves of plants are most closely associated with what
process? - Answer Evaporation of water from the plant.
In diagnostic testing, the electroencephalogram permits the physician to what? - Answer
Examine the impulses of the nerve cells within the brain.
In ecological succession, the first living thing to colonize a hitherto barren area is call what? -
Answer Pioneer Organism.
In varieties of matter, the term heterogeneous may be applied to what? - Answer Mixtures, but
not elements or compounds.
Periodontitis is an inflammatory condition of the what? - Answer Gum tissue that surrounds
the neck of each tooth.
Questions And Answers.
1 kilogram (kg) of solid X at 10 degrees C and 1 kg of solid Y at 10 degrees C each absorb 5 joules
of heat energy. The final temperatures of X and Y are 15 degrees C and 20 degrees C,
respectively. Compared to X, Y must have a lower what? - Answer Specific Heat.
A method for determining the blood alcohol content of a subject is to what? - Answer Use a
Breathalyzer.
A person blows his breath into a straw that is placed in limewater. The limewater becomes
cloudy because the person's breath contains what? - Answer Carbon Dioxide.
A student focuses sunlight to a point with a thing converging (convex) lens. Which if these direct
measurements can the student make as a result of this experiment? - Answer The approximate
focal length of the lens.
An unknown gas is more dense than air, does not support combustion, and turns a limewater
solution cloudy. This gas is most probably what? - Answer Carbon Dioxide.
Guard cells which can be found in the leaves of plants are most closely associated with what
process? - Answer Evaporation of water from the plant.
In diagnostic testing, the electroencephalogram permits the physician to what? - Answer
Examine the impulses of the nerve cells within the brain.
In ecological succession, the first living thing to colonize a hitherto barren area is call what? -
Answer Pioneer Organism.
In varieties of matter, the term heterogeneous may be applied to what? - Answer Mixtures, but
not elements or compounds.
Periodontitis is an inflammatory condition of the what? - Answer Gum tissue that surrounds
the neck of each tooth.
