421. Which factor can influence the particle size distribution of lime produced during the manufacturing process?
a) Calcination temperature
b) Humidity level
c) Limestone color
d) Ambient pressure
View Answer
Correct answer: a) Calcination temperature
Explanation: The calcination temperature can influence the particle size distribution of lime produced during the manufacturing process. Higher temperatures can result in smaller particle sizes.
422. Which type of lime is commonly used for soil drying and stabilization in road construction?
a) Hydraulic lime
b) Fat lime
c) Dolomitic lime
d) Slaked lime
View Answer
Correct answer: a) Hydraulic lime
Explanation: Hydraulic lime is commonly used for soil drying and stabilization in road construction. It can improve the strength and stability of the soil.
423. What is the approximate composition of calcium oxide (lime) in commercially available lime products?
a) 70-80%
b) 50-60%
c) 30-40%
d) 10-20%
View Answer
Correct answer: b) 50-60%
Explanation: Commercially available lime products typically have a calcium oxide (lime) content of approximately 50-60%.
424. Which type of lime is commonly used for the manufacture of lime-based adhesives and mortars for tile and stone installation?
a) Hydraulic lime
b) Fat lime
c) Dolomitic lime
d) Slaked lime
View Answer
Correct answer: a) Hydraulic lime
Explanation: Hydraulic lime is commonly used for the manufacture of lime-based adhesives and mortars for tile and stone installation. Its hydraulic properties provide good bond strength.
425. Which technique is commonly used for the control and adjustment of lime quality during the manufacturing process?
a) Sieving
b) pH testing
c) Sampling and testing
d) Visual inspection
View Answer
Correct answer: c) Sampling and testing
Explanation: Sampling and testing is commonly used for the control and adjustment of lime quality during the manufacturing process. Samples are collected and tested to ensure the lime meets the desired specifications.
426. Which type of lime is commonly used for the manufacture of lime-based plasters and finishes with decorative textures?
a) Hydraulic lime
b) Fat lime
c) Dolomitic lime
d) Slaked lime
View Answer
Correct answer: b) Fat lime
Explanation: Fat lime, also known as non-hydraulic lime, is commonly used for the manufacture of lime-based plasters and finishes with decorative textures.
427. Which technique is commonly used to achieve a more homogenous distribution of lime particles during the manufacturing process?
a) Sieving
b) Grinding
c) Calcination
d) Screening
View Answer
Correct answer: b) Grinding
Explanation: Grinding is commonly used to achieve a more homogenous distribution of lime particles during the manufacturing process. It helps reduce particle size and improve uniformity.
428. Which property of lime allows it to act as a natural fungicide and inhibit the growth of fungi?
a) Alkalinity
b) Porosity
c) Adhesion
d) Durability
View Answer
Correct answer: a) Alkalinity
Explanation: Lime possesses alkalinity, which allows it to act as a natural fungicide and inhibit the growth of fungi on surfaces where it is applied.
429. Which type of lime is commonly used for the manufacture of lime-based soil blocks for sustainable construction?
a) Hydraulic lime
b) Fat lime
c) Dolomitic lime
d) Slaked lime
View Answer
Correct answer: b) Fat lime
Explanation: Fat lime, due to its low hydraulicity, is commonly used for the manufacture of lime-based soil blocks used in sustainable construction practices.
430. Which technique is commonly used to reduce the impurities and contaminants present in limestone before the calcination process?
a) Washing
b) Grinding
c) Sifting
d) Drying
View Answer
Correct answer: a) Washing
Explanation: Washing is commonly used to reduce the impurities and contaminants present in limestone before the calcination process. It helps improve the purity of the raw material.
