Questions

#include "alloc.h"

#define MAXROW 3

#define MAXcol 4

main()

{

        int *p, i, J;

        p = (int *) malloc (MAXROW * MAXCOL * sizeof (int));

         for ( i=0; i < MaxROW ; i++)

         {

                for (j=0; j < MAXCOL ; j++)

                { 

                      p [ i * MAXCOL + j] = i;

                       printf ( "%d", p [i * MAXCOL + j] );

                 }

                  printf ("\n");

          }

}

In rusting the Iron ore make a chemical reaction with the oxygen in the presence of water and environmental or atmospheric moisture to produce an Iron oxide. Iron oxide is otherwise called as rust.

The rusting of iron is a chemical change because it is two substances reacting together to make a new substance.

An industry with fast economic growth from the starting days itself which has future importance. Industries like petrochemical industry, hydrogen fuel production, food processing industry, space tourism, and online encyclopedias.

1 atm: It was originally defined as the pressure exerted by 760 mm of mercury at 0 °C and standard gravity (g = 9.80665 m/s2).