1.There is no selling cost under (1) (a) Perfect competition (b) Monopolistic competition (c) Oligopoly (d) Duopoly 2.Which of the following systems in independent India goes against the very basis of democracy ? (1) (a) Caste system (b) Economi... Read more

1.Radio was invented by (4) (a) Thomas Alva Edison (b) Graham Bell (c) J.L. Baird (d) G. Marconi 2.A in AIDS stands for (2) (a) Accumulate (b) Acquired (c) Acute (d) None of these 3.Brass is an alloy of (3) (a) Copper and Tin (b) Copper and Nick... Read more

1. If the numerical value of the volume of a right circular cylinder and its curved surface area are equal, then its radius is (1) (a) 2 units (b) 4 units (c) 3 units (d) 6 units 2.If (3x -y) : (x + 5y) = 5 :7, then the value of (x + y) : [... Read more