Define the following with example.
(i)Order
(ii) Class
(iii) phylum
(iv) kingdom
(v) Herbarium sheet
(Vi) Taxonomic key

Define the following terms (i)Minerals (ii)Ores (iii)Gangue.

Test which of the following is solutions of x^2-5x+6=0 i)2,ii) -3 ,iii) -2 ,iv)3

Test which of the following is solutions of x^2-3x-10=0 i)2,ii) -5 ,iii) -2 ,iv)5

Arrange the following communication methods/modes in descending order on the basis of their operating frequency. (i) AM Radio transmission (ii) Cellular communication (iii) Sky wave propagation (iv) Satellite communication