WorksheetsDay 83-Dec 19-worksheet-Diploma-Lime
Total questions: 15
Worksheet time: 11mins
The theoretical quantity of water required for slaking of quick lime is approximately:
10% by weight of lime
20% by weight of lime
32% by weight of lime
50% by weight of lime
Quick lime obtained directly from the kiln in irregular solid pieces is called:
Hydrated lime
Milk of lime
Lump lime
Fat lime
The property of lime to set under water in absence of free circulation of air is known as:
Slaking
Calcination
Hydraulicity
Carbonation
Which constituent of limestone is mainly responsible for producing hydraulicity in lime?
Magnesium carbonate
Sulphates
Clay
Pyrites
According to BIS classification (IS 712-1984), lime used for structural purposes belongs to:
Class B
Class C
Class A
Class D
The colour of hydraulic limestone is generally:
Pure white
Yellowish white
Bluish grey or brown
Pink
In the acid test on limestone, vigorous effervescence with little residue indicates:
Hydraulic limestone
Impure limestone
Pure limestone
Dolomitic limestone
True/False — Increase in impurities increases hydraulicity of lime.
True
False
True/False — Sulphates present in limestone accelerate slaking and delay setting.
True
False
The stable chemical form of limestone is (a) .
Slaked lime is chemically known as (a) .
Milk of lime is a thin suspension of (a) in water.
Lime water is obtained after (a) of milk of lime.
The process of hardening of lime paste is known as (a) .
The desirable percentage of clay in limestone for good lime is (a) %.
