Objective of r.c.c code 456-200

I. Select correct option/options from the following questions. (1 to 196) 1. Minimum grade of concrete for moderate exposure with normal weight aggregates is (a) M 15 (b) M 20 (c) M 25 (d) M 35  Ans-c 2. Concrete surfaces exposed to sea water spray is considered exposure condition (a) extreme (b) very severe (c) severe (d) moderate Ans-B 3. Concrete surface buried under non-aggressive soil/groundwater is considered exposed to condition (a) moderate (b) severe (c) very severe (d) extreme Ans-a 4. M 45 concrete is regarded as (a) ordinary concrete (b) standard concrete (c) high strength concrete (d) ultra-high strength concrete Ans-v 5. M 75 concrete is regarded as (a) ordinary concrete (b) standard concrete (c) high strength concrete (d) ultra-high strength concrete Ans-c 6. strength calculations and serviceability calculations, Poisson’s ratio of concrete is taken respectively as (a) 0.15 and 0.1 (b) 0.1 and 0.15 (c) 0.2 and 0.15 (d) 0.15 and 0.2  Ans-d 7. In the absence of da...