What is the pH of human blood?

6.5 5.8 10 7.4

7.4

The correct answer is Option (4) -7.4 The pH of human blood is normally slightly basic, with a range of about 7.35 to 7.45. This means that blood is not perfectly neutral (pH 7), but it's very close. The body tightly regulates blood pH within this narrow range because it's crucial for many biological processes to function properly.