FUNDAMENTALS OF CHEMICAL
ENGINEERING - TEST 1 QUESTIONS
AND VERIFIED ANSWERS|100%
CORRECT|GRADE A+
mass, length, and time are all - ANSWER dimensions
The numerical values of two quantities may be directly added or subtracted - ANSWER only if their units
are the same
A conversion factor is - ANSWER a ratio of two expressions of the same quantity, with numerator and
denominator expressed in different units
Which of the following is NOT a base unit of the SI system? - ANSWER joule
Which of the following is NOT a base unit of the CGS system? - ANSWER meter
The number of significant figures in the number
2.360 x 105 - ANSWER four
When calculating the product
2.925 x 21.2 (i.e., 2.925 times 21.2)
the final answer would be correctly reported to how many significant figures? - ANSWER three
Consider the equation
M = F*t + 0.5
, where M is the mass of a container (kg) and t is the time that fluid has been added to the container
(seconds). For the equation to be dimensionally homogeneous and consistent in its units, the units of
the variable F and the number 0.5 must be: - ANSWER kg/second and kg, respectively
Range, sample variance, and sample standard deviation are used to - ANSWER quantify the scatter of a
group of data
Specific volume of a substance is - ANSWER the volume of unit mass of the substance
The units of specific gravity in the SI system are - ANSWER dimensionless
An orifice meter is commonly used to measure - ANSWER fluid flow rate
Absolute pressure and gauge pressure are related by the equation - ANSWER Absolute pressure = gauge
pressure + atmospheric pressure
Avogadro's number is 6.02 x 1023, and the molecular weight of heptane is 100. Also, 454 g = 1 lbm, and
2.2 lbm = 1 kg. How many molecules of heptane are in a lb-mole of heptane? (to 2 significant figures). -
ANSWER 6.0 x 10^23
The pressure P at the base of a column of a fluid is called the - ANSWER hydrostatic pressure
For this question, assume that air is 20 mol% O2 and 80 mol% N2. Then is the mass percent N2 in air -
ANSWER
The mass flowrate m', the volumetric flowrate V', and the density rho are related by the equation -
ANSWER m' = V' x rho
Manometers and bourdon gauges are both used for measurement of - ANSWER fluid pressure
ENGINEERING - TEST 1 QUESTIONS
AND VERIFIED ANSWERS|100%
CORRECT|GRADE A+
mass, length, and time are all - ANSWER dimensions
The numerical values of two quantities may be directly added or subtracted - ANSWER only if their units
are the same
A conversion factor is - ANSWER a ratio of two expressions of the same quantity, with numerator and
denominator expressed in different units
Which of the following is NOT a base unit of the SI system? - ANSWER joule
Which of the following is NOT a base unit of the CGS system? - ANSWER meter
The number of significant figures in the number
2.360 x 105 - ANSWER four
When calculating the product
2.925 x 21.2 (i.e., 2.925 times 21.2)
the final answer would be correctly reported to how many significant figures? - ANSWER three
Consider the equation
M = F*t + 0.5
, where M is the mass of a container (kg) and t is the time that fluid has been added to the container
(seconds). For the equation to be dimensionally homogeneous and consistent in its units, the units of
the variable F and the number 0.5 must be: - ANSWER kg/second and kg, respectively
Range, sample variance, and sample standard deviation are used to - ANSWER quantify the scatter of a
group of data
Specific volume of a substance is - ANSWER the volume of unit mass of the substance
The units of specific gravity in the SI system are - ANSWER dimensionless
An orifice meter is commonly used to measure - ANSWER fluid flow rate
Absolute pressure and gauge pressure are related by the equation - ANSWER Absolute pressure = gauge
pressure + atmospheric pressure
Avogadro's number is 6.02 x 1023, and the molecular weight of heptane is 100. Also, 454 g = 1 lbm, and
2.2 lbm = 1 kg. How many molecules of heptane are in a lb-mole of heptane? (to 2 significant figures). -
ANSWER 6.0 x 10^23
The pressure P at the base of a column of a fluid is called the - ANSWER hydrostatic pressure
For this question, assume that air is 20 mol% O2 and 80 mol% N2. Then is the mass percent N2 in air -
ANSWER
The mass flowrate m', the volumetric flowrate V', and the density rho are related by the equation -
ANSWER m' = V' x rho
Manometers and bourdon gauges are both used for measurement of - ANSWER fluid pressure
