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81.

Quick lime is a

A.	carbonate of lime	B.	oxide of calcium
C.	product left immediately after the calcination of pure limestone	D.	lime quickly treated with water

82.

The lime which consists almost entirely of calcium oxide, is called

A.	poor lime	B.	rich lime
C.	hydraulic lime	D.	limestone

83.

The lime which contains more than 30% of clayey impurities in the form of silica, alumina and iron oxide, is known as

A.	poor lime	B.	rich lime
C.	hydraulic lime	D.	limestone

84.

Eminently hydraulic lime is one in which the percentage of silica, alumina and iron oxide is

A.	5 to 10%	B.	10 to 25%
C.	25 to 30%	D.	30 to 40%

85.

The hydraulic lime which resembles very much with Portland cement in its chemical composition is called.

A.	feebly hydraulic lime	B.	moderately hydraulic lime
C.	eminently hydraulic lime	D.	none of these

86.

Poor or lean lime

A.	slakes rapidly with considerable evolution of heat	B.	takes very long time to develop adequate strength
C.	has high plasticity	D.	none of the above

87.

Rich or fat lime

A.	slakes rapidly with considerable evolution of heat	B.	takes very long time to develop adequate strength
C.	has high plasticity	D.	all of these

88.

The commonly used lime for works under water or in damp situations is

A.	fat lime	B.	lean lime
C.	feebly hydraulic lime	D.	eminently hydraulic lime

89.

The slaking of moderately hydraulic lime is scarcely noticeable.

Yes

90.

Which of the following statement is correct?

A.	The fat lime swells two to three times of its original volume during slaking.	B.	The poor lime is of pure white colour.
C.	The feebly hydraulic lime slakes sluggishly.	D.	all of the above