Bachelors

No dear, diplomas are not accepted. If you have completed 10+2 you need to meet certain requirements
1. Successfully completing the first year of a Bachelor programme from a recognized university in India in the relevant subject field or
2. Successfully clearing the IIT Joint Entrance Examination for admission to courses in technology and natural sciences or
Passing the qualification assessment examination in Germany, called Feststellungsprüfung .

Will depend on the university requirements, they will check its equivalency though AMIE is a great option and recognized in India . If you have done the course full time or through correspondence, your overall academic records etc will be checked. Please speak with the university officials directly.

Hello, before applying for any country or university check if you meet the admission requirements. Are you applying from India?You must complete 13 years education and no diplomas are accepted. Refer to the daad link below to check how you can meet the criteria
www.daaddelhi.org/en/15064/index.html
Regards

Hello, the annual fee for international students mentioned on the website is AUD$ 33,279.
Regards

Please go through this link. Hope it helps if not please revert back to me.http://dsanghi.blogspot.in/2014/07/ugc-rules-dual-degree-offerings-of-iits.html. Wish you Luck.

what's the meaning of BiPC ? if that's stand for Biology Physics and Chemistry then without mathematics you cannot pursue the JEE or equivalent so you can't do Btech. but nothing to worry about it. if you are interested in Computer Engg then you can pursue BCA + MCA . MCA is equivalent with Btech CSE.
You pursue BCA only when you have computer sci/app as you 4th subject in 10+2 level. if you don't have computer in 12th. you may go for Diploma in CST after Diploma you can pursue Btech in CSE.
Im provide you two probably way to reach your dream. choose one and go ahead. all the best for your future.

B.LLB you can pursue.

No, you need to registered as an Architect with the council of Architecture which gives the registration only to people who have pursued B.Arch degree.

You can opt for job or higher education such as M.Sc Physics, Lateral entry into B.Tech, MBA, MCA, BEd, LLB or post graduate diplomas in chosen specialization. You are eligible for all central or state government jobs, PSU, Public sector banks, Defense Services and Paramilitary force where eligibility criteria is graduation degree/