This set of Mass Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Density”.
1. Which one is having highest density?
a) Snow
b) Teflon
c) Soil
d) Sand
View Answer
Explanation: Teflon, also known as polytetrafluoroethylene has density 2200 kg/m3. It is a thermoplastic polymer, which is a white solid at room temperature. Density of snow, soil and sand are 110 kg/m3, 2050 kg/m3 and 1515 kg/m3 respectively.
2. What is the density of paper in kg/m3?
a) 910
b) 920
c) 930
d) 940
View Answer
Explanation: Paper density is used in pulp or fabric industry in order to measure of the mass of the product per unit of area for a type of paperboard.
3. Which one is having the least density?
a) Ice
b) Pyrex
c) Paraffin
d) Marble
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Explanation: Ice is water. Depending on the presence of impurities such as particles of soil or bubbles of air, it can appear transparent or a more or less opaque bluish-white color.
4. What is the density of sand in kg/m3?
a) 1215
b) 1315
c) 1415
d) 1515
View Answer
Explanation: Density of sand can vary depending on the grain size and moisture content and how tightly it is compacted.
5. What is the density of snow in kg/m3?
a) 100
b) 110
c) 120
d) 130
View Answer
Explanation: Snow is precipitation in the form of flakes of crystalline water ice that falls from clouds. It is a granular material, soft, white and fluffy structure.
6. Which one is having least density?
a) Clay
b) Coal
c) Cotton
d) Banana
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Explanation: Cotton is a soft, fluffy staple fiber that grows in a boll. The fiber is spun into yarn or thread. Density of cotton is 80 kg/m3 while that of clay, coal and banana are 1460 kg/m3, 1350 kg/m3 and 980 kg/m3.
7. What is the density of limestone in kg/m3?
a) 2320
b) 2430
c) 2530
d) 2630
View Answer
Explanation: It is also known as calcium hydroxide. It is a colorless crystal which is obtained from calcium oxide.
8. What is the density of granite in kg/m3?
a) 2130
b) 2230
c) 2530
d) 2630
View Answer
Explanation: It is granular and phaneritic in nature. This mainly consists of feldspar, mica and quartz.
9. Which one is having highest density?
a) Leather
b) Paper
c) Balsa
d) Snow
View Answer
Explanation: Density of leather is 998 kg/m3 while that of paper, balsa and snow are 930 kg/m3, 140 kg/m3 and 110 kg/m 3.
10. What is the density of oak in kg/m3?
a) 445
b) 545
c) 645
d) 745
View Answer
Explanation: Oak has spirally arranged leaves, with lobate margins in many species. There are strong molecular forces of attraction between their bonds.
Sanfoundry Global Education & Learning Series – Mass Transfer.
To practice all areas of Mass Transfer, here is complete set of 1000+ Multiple Choice Questions and Answers.
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