Is Maths compulsory for NATA?

Yes maths is compulsory for NATA. 

About NATA

NATA is an entrance exam which is conducted by National Institute of advanced studies in architecture (NIASA) the body of council of Architecture in India. This entrance exam is a national level examination. Students who are willing to study Bachelor of architecture or some other relevant architecture courses at all recognized institutions across India, can give NATA after their 12th examination.

NATA question paper pattern 

NATA measures drawing and observation skills, sense of proportion, aesthetic sensitivity and critical thinking ability by 2parted exams.
first part- paper based drawing test
second part- online test with MCQs on Physics, Chemistry, Mathematics and General Aptitude Test.

Syllabus for NATA

• Drawing includes memory drawing, shades, shadows, 2D compositions, visualisation, perspective drawing etc. NATA drawing part is totally depend on your creativity and ability. You need to practice more and more to improve your skills and ideas. You need to be creative, because creativity is necessary in this field. 
• Aptitude test includes Diagrammatic Reasoning, Numerical Reasoning, Verbal Reasoning, Inductive Reasoning, Situational Judgment, Logical Reasoning, Abstract Reasoning. 
• Mathematics include algebra, logarithm, matrices, trigonometry, coordinate geometry, 3D coordination of geometry, theory of calculus, application of calculus, permutation and combination, statistics and probability. 
• NATA also includes questions from Physics and chemistry in which class 10-12 studies are important. As well as includes general aptitude test with mathematical reasoning, sets and relations. 

Eligibility

the eligibility criteria to study B. Arch, it is important to have physics, chemistry and mathematics in your 10+2 stream. So, if you are applying for NATA and don’t have Maths in your 10+2 stream then your exam is of no use. 
Also, the maths and the questions of physics chemistry consist in NATA's paper will usually come from 10-12 standards. So, its important you know basics of both ohysics and chemistry also the mathematics very well. 

NATA held as a one day examination, which includes 2 parts and the duration of each part is 3 hours and total marks for the exam is out of 200.

If you are thinking of giving NATA, you should check eligibility and the syllabus first and can apply frol NATA's official website. 

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Hope this helped! 
Thank you and all the best!