For limit state of collapse, the partial safety factors recommended by IS 456:2000 for estimating the design strength of concrete and reinforcing steel are respectively

A reinforced concrete structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS: 456-2000 is

Consider the following statements:

1. The compressive strength of concrete decreases with increase in water-cement ratio of the concrete mix.

2. Water is added to the concrete mix for hydration of cement and workability.

3. Creep and shrinkage of concrete are independent of the water-cement ratio in the concrete mix.

The true statements are

The partial factor of safety for concrete as per IS: 456-2000 is