Exam

As soon as your paper is checked and you have cleared you will be called for your GD-PI via mail or telephonic conversation

Yes, the minimum cutoff for AAT will be around 100 marks, hence you tend to be eligible for the examination.

Some suggestions be:
1- A Complete Self Study Guide for B.Arch. Entrance Examination by P K Mishra
2- Steps to Architecture NATA B.Arch. Entrance Exam Paper Guide Paperback by Nimish Madan
3- Steps to Architecture: B.Arch. (NATA/JEE Main) Exam Guide Paperback by Nimish Madan
4- NATA and B.Arch. Complete

The application form for Calcutta University BA LL.B. entrance exam 2018 will be available from the first week of June 2018 until the third week of June 2018. Candidates should pay the application fee online through SBI collect from the first week of June until the fifth week of June 2018.
Steps to

Following is the syllabus:
Quantitative Ability
Basic question of inferential and visual reasoning
Set of questions from DI covering topics of pie chart, graphs, time and Work
Quadrilaterals
Number system
Square roots
Average
Fractions and decimals
Profit and Loss
Discount
Ratio and Proportion
Mathematical Seri

Yes, you have good chances of getting government colleges. There are many government colleges in which you can get admission because your rank is good.

These scholarships are based upon the states and students, distinguished by different branches and streams and though open to all the students of India. The link for the site –
http://www.ccbnic.in/
Hope this helps. Kindly mention if this won't cover your query.

The cutoff for Rachana Sansad Mumbai:
For, Academy Of Architecture | Aided
Cut off is 155.35 /200
State rank cutoff - 82
For, Academy Of Architecture | Unaided
Cut off is 154
State rank cutoff - 92 (Cut-offs are of open category).

Yes, there are many colleges which accept Mains paper - 2 as well, still there are many which accept only NATA. Some recommendations are BMS College or Engineering, NIT Trichy, NIT Kozhikode and RV College of Architecture.