Which bitwise operator is suitable for checking whether a particular bit is on o

Which bitwise operator is suitable for checking whether a particular bit is on or off?

2) What is the output of this C code?

#include <stdio.h>
     int main()
     {
         int i = -5;
         i = i / 3;
         printf("%d
", i);
         return 0;
     }

3) Which of the following data type will throw an error on modulus operation(%)?

4) What is the output of this C code?

#include <stdio.h>
     void main()
     {
         char a = 'a';
         int x = (a % 10)++;
         printf("%d\n", x);
     }

5) Consider the following program segment:

 main()
 {
   int a,b,c;
   b=3;
   a=2;
   a=2*(b++);
   c=2*(++b);
 }