Basic civil and mechanical engineering quiz,4

1.In a mortar ,the binding material is

• cement

• sand

• surkhi

• cinder

2.ultimate strength to cement is provided by

• tricalcium silicate

• di calcium silicate

• Tri calcium aluminate

• tetra calcium alumino ferrite

3.sand stone is

• sedimentary rock

• metamorphic rock

• igneous rock

• volcanic rock

4.toughness index of a good stone should be more than

• 17

• 18

• 13

• 19

5.what is the required specific gravity for a good building stone?

• Greater than 2.7

• less than 3

• greater than 3

• less than 2.7