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81.

The value of ruling gradient in plain, as recommended by Indian Roads Congress, is

A.	1 in 10	B.	1 in 20
C.	1 in 30	D.	1 in 40

82.

The value of ruling gradient in hills, as recommended by Indian Roads Congress, is

A.	1 in 10	B.	1 in 20
C.	1 in 30	D.	1 in 40

83.

An essential gradient, which has to be provided for the purpose of road drainage, is called

A.	maximum gradient	B.	minimum gradient
C.	exceptional gradient	D.	floating gradient

84.

The total rise or fall between any two points chosen on the alignment divided by the horizontal distance between the two points, is called

A.	average gradient	B.	exceptional gradient
C.	ruling gradient	D.	floating gradient

85.

For cement concrete roads, a minimum gradient of 1 in 330 can be provided.

True

False

86.

Which of the following statement is correct?

A.	Steeper gradients are, sometimes, provided to avoid deep excavations.	B.	Steeper gradients are, sometimes, provided to avoid long detours.
C.	Exceptional gradient becomes necessary to avoid deep cuttings.	D.	all of the above

87.

An gradient on a road is said to be an exceptional gradient if its is

A.	less than the minimum gradient	B.	more than the maximum gradient
C.	more than the minimum gradient	D.	less than the maximum gradient

88.

Exceptional gradient should not be provided in a length more than

A.	10 m	B.	20 m
C.	50 m	D.	100 m

89.

Floating gradients are provided at

summit

valley

90.

The distance, measured along the centre line of a road, over which a driver can see the opposite object on the road surface, is called

A.	sight distance	B.	visibility
C.	clear distance	D.	none of these