(Around 0:48:26) The duster placed on the teacher's table changes from being kept sideways facing to being placed upside down by the time Kamini picks it up to dust the board.
(Around 0:50:26) Several books and a chalk box appear out of nowhere to be placed on the teacher's table by the time the student turns back and faces the classroom.
(Around 01:20:00) The team of surgeons announces a "100% blockage in LAD" coronary artery and proceeds with angioplasty. However, an LAD blockage, especially in a diabetic person, is supposed to be treated with coronary artery bypass graft surgery, according to the medical protocols.
(Around 0:50:14) The handwriting on the black board changes in between shots and becomes significantly different by the time the student finishes writing and turns back.
(Around 0:52:37, 0:55:48 and 0:52:54) The letters delivered to Vidya have multiple grammatical errors, which is an aberration, considering that it was signed by the Principal's office.
(Around 0:04:48) The words spoken by Kamini do not match at all with her lip movements when she announces that everyone has to report by 8 am the next morning.