No, a diploma in mechanical engineering does not qualify you to appear for the CLAT (Common Law Admission Test).

CLAT is an entrance exam primarily for undergraduate law programs in India. The basic eligibility criteria usually require a 10+2 qualification or its equivalent.

To be eligible for CLAT, you typically need to have completed your 12th standard or an equivalent examination.

If you're interested in pursuing law, you might consider alternative entrance exams or law programs that accept diploma holders.

I hope this information helps you.