Hi Mishti

There is no calculator allowed in the NEET exam.You just can't use anything except the pen/pencil provided by the CBSE. As in case of the AIIMS you find an on-screen calculator there and can perform simple calculations therefore. Calculators are strictly not allowed in JEE exams also.so if you are relying on the calculators for any calculations of either chemistry or physics or something please don't.Practise the questions by yourself

All the best!

Hello mishti, 

Calculators are not allowed in NEET and JEE but it is allowed in AIIMS. But in AIIMS you are not allowed to use the physical calculator but you will be provided with a calculator software. 

Regards 

No the use of calculator is prohibited in JEE Mains.And there is not any mathematics paper in the NEET or AIIMS exam.You cannot use calculator in both jee mains and advance any many more engineering competitive exam.

Hope it helps.Thank you.