QUESTION$\mathrm{.}1$:

Numerous factors have an influence on the compressive strength of concrete. In each of the questions below, mention the circumstance and give brief explanation which would result in a higher strength.

a$)(2$p$)$ Concrete loaded during compression testing at a rate of $12MP\frac{a}{m}in.$ or $120MP\frac{a}{m}i{n}_{?}.$

b$)(3$p$)$ Cylindrical concrete specimens having dimensions of $1530cm$ or $1020cm$

c$)(3$p$)$ Concrete specimens having dimensions of cube $202020cm$ and cylinder $1530cm$

d$)(2$p$)$ Concrete cured in the air, cured in the water