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Q: Which of the following type of lime is manufactured by burning marble, white chalk, calcareous tufa, pure lime stone, sea shell and coral?
  • A. Hydraulic lime
  • B. Fat lime
  • C. Hydrated lime
  • D. Lump lime
Correct Answer: Option B - Pure/Fat/Rich/Quicker lime–It's lime obtain from burning of limestone, marble, white chalk, seashells, coral. • It is pure lime. It contain about 95-97% of CaO, thus impurities constitute hardly 5% when water is added, it slakes vigorously and its volume increase 2-2.5 time. Hydraulic lime–The hydraulic lime is further classified into three sub type on the basis of hydraulicity of the lime. (i) Class A (Eminently hydraulic lime)–Clay content (20-30%), set under water in 24 hour (ii) Class B (Moderately Hydraulic)–Clay content (10-20%), set under water in about a week. (iii) Feebly hydraulic lime (Class C)–Clay content (5-10%), set under water within a month or more. Lump lime–Lime is obtained from kilns is generally in the shape of solid lump it is termed as lump line.
B. Pure/Fat/Rich/Quicker lime–It's lime obtain from burning of limestone, marble, white chalk, seashells, coral. • It is pure lime. It contain about 95-97% of CaO, thus impurities constitute hardly 5% when water is added, it slakes vigorously and its volume increase 2-2.5 time. Hydraulic lime–The hydraulic lime is further classified into three sub type on the basis of hydraulicity of the lime. (i) Class A (Eminently hydraulic lime)–Clay content (20-30%), set under water in 24 hour (ii) Class B (Moderately Hydraulic)–Clay content (10-20%), set under water in about a week. (iii) Feebly hydraulic lime (Class C)–Clay content (5-10%), set under water within a month or more. Lump lime–Lime is obtained from kilns is generally in the shape of solid lump it is termed as lump line.

Explanations:

Pure/Fat/Rich/Quicker lime–It's lime obtain from burning of limestone, marble, white chalk, seashells, coral. • It is pure lime. It contain about 95-97% of CaO, thus impurities constitute hardly 5% when water is added, it slakes vigorously and its volume increase 2-2.5 time. Hydraulic lime–The hydraulic lime is further classified into three sub type on the basis of hydraulicity of the lime. (i) Class A (Eminently hydraulic lime)–Clay content (20-30%), set under water in 24 hour (ii) Class B (Moderately Hydraulic)–Clay content (10-20%), set under water in about a week. (iii) Feebly hydraulic lime (Class C)–Clay content (5-10%), set under water within a month or more. Lump lime–Lime is obtained from kilns is generally in the shape of solid lump it is termed as lump line.