$$z = {{2 - 3i} \over { - 5 + i}}$$ can be expressed as

The survey carried out to delineate natural features, such as hills, rivers, forests and manmade features, such as towns, villages, buildings, roads, transmission lines and canals is classified as

A certain soil has the following properties: G_s = 2.71, n = 40% and w = 20%. The degree of saturation of the soil (rounded off to the nearest percent) is _________

The modulus of elasticity, E = 5000$$\sqrt{{\mathrm f}_\mathrm{ck}}$$ where f_ck is the characteristic compressive strength of concrete, specified in IS:456-2000 is based on