Question

where is C chord in keyboard

Answer 1

The C chord, like any other major chord is formed by combining a root, a major third and a perfect fifth. The notes for a C chord are C E G. Since the C chord has these three notes alone (root, major third and perfect fifth, or C E G) it is called a major triad

Answer 2

It is usually the first chord that one learns. The C chord, like any other major chord is formed by combining a root, a major third and a perfect fifth. The notes for a C chord are C E G. Since the C chord has these three notes alone (root, major third and perfect fifth, or C E G) it is called a major triad.