The width of foot for 90 R rail section is__________________?

A. 40 mm
B. 50 mm
C. 75 mm
D. 100 mm

A. to join the two rails together
B. to join rails with the sleeper
C. to allow rail to expand and contract freely
D. none of the above

A. between the adjoining faces of the running rail and the check rail near the crossing
B. between the gauge faces of the stock rail and the tongue rail
C. through which the tongue rail moves laterally at the toe of the switch
D. none of the above

A. 2
B. 3
C. 4
D. none of the above

A. toe of the switch
B. nose of crossing
C. both (A) and (B)
D. none of the above

A. G/8
B. G/10
C. G/12
D. G/15
where G is the gauge