Question

Would you be able to check if water is hard by using a detergent ?

Answer 1

ya we chech if water is hard by using detergent because by using detergent in hard water a lot of white substance is formed.....

Answer 2

$\huge {\bold {\red{Answer : }}}$

Detergent gives lather with hard and soft water both, while a soap gives lather with soft water only. Thus, it is not possible to check if water is hard; by using a detergent.