Example 1 the area of trapezium shaped field is 480 m square the distance between two parallel side is 15 m sq. and one of the parallel side is 20 m find the other parallel side
A round table cover has six equal design as shown in the figure.if The radius of the cover is 28cm, find the cost of making the design at rate of 0.35 per cm square
a)How many nodes are present in the following molecular orbitals: (i) π* (2px) (ii) π* (2pz) 3 (b) How will bond order change during following processes? (p) B2 B2-1 (q) O2 ----02+1 (iii) Write Lewis structure of nitrate ion