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121.

In India, the sleeper density provided is

A.	18 sleepers per rail length	B.	25 sleepers per rail length
C.	28 sleepers per rail length	D.	40 sleepers per rail length

122.

The sleeper density on main lines is

decreased

increased

123.

The chief function of providing ballast in the railway track is

A.	to uniformly distribute the load from sleepers over a large area of formation	B.	to held the sleepers in position
C.	to provide elasticity and resilience to the track	D.	all of the above

124.

The ballast material generally used on Indian railways consist of

A.	broken stone	B.	gravel
C.	moorum	D.	all of these

125.

Under the sleepers,

boxing

packing

126.

The ballast thrown around the sleepers and loosely filled on slopes is called boxing of ballast.

Correct

Incorrect

127.

The boxing of ballast is done to prevent

A.	lateral movement of sleepers	B.	longitudinal movement of sleepers
C.	both lateral and longitudinal movement of sleepers	D.	none of the above

128.

To keep the railway yard dry, the ballast used is

A.	sand	B.	coal ash
C.	briken stone	D.	both (a) and (b)

129.

For new embankments in black cotton soil, the material used as blanket is

A.	sand	B.	moorum
C.	coal ash	D.	broken stone

130.

A good ballast, when laid on formation, should have sufficient voids.

Yes