** Question No : 8**

Addition of pozzolana to cement

Decreases workability

Increases strength

Increases heat of hydration

None of these

** Question No : 9**

The relation between modulus of rupture f_{cr}, splitting strength f_{cs} and direct tensile strength f_{cl} is given by

f_{cr} - f_{cs} = f_{cl}

f_{cr} > f_{cs} > f_{cl}

f_{cr} < f_{cs} < f_{cl}

f_{cs} > f_{cr} > f_{cl}

** Question No : 10**

The increased cohesiveness of concrete, makes it

Less liable to segregation

More liable to segregation

More liable to bleeding

More liable for surface scaling in frosty weather

** Question No : 11**

For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

0.75 - 0.80

0.80 - 0.85

0.85 - 0.92

Above 0.92

** Question No : 12**

A beam curved in plan is designed for

Bending moment and shear

Bending moment and torsion

Shear and torsion

Bending moment, shear and torsion

** Question No : 13**

For the design of retaining walls, the minimum factor of safety against overturning is taken as

1.5

2.0

2.5

3.0

** Question No : 14**

In a ring beam subjected to uniformly distributed load (i) Shear force at mid span is zero (ii) Shear force at mid span is maximum (iii) Torsion at mid span is zero (iv) Torsion at mid span is maximum The correct answer is

(i) and (iii)

(i) and (iv)

(ii) and (iii)

(ii) and (iv)