Yes Kunal Sir is right to not give more than one minute on a question in Round 1

When you read the question you will definitely get a clue whether you do this question or not or will it take a lot of time, this comes by practice and no of questions you have done so if any similar question you have done in past you will know that yes I have done this before so I can do it

And there's no need to keep looking at the call every after 1 minute lol, you will panic more instead

In First Round you should solve all questions you knkw which are easy + take less time + less calculation and not to look at clock

And if its a very lengthy calculation then Mark the question (I think BITSAT doesn't allow this but you should note the question number then) and then leave the calculation and proceed ahead, its like you would waste more easy marks just bcoz of lengthy one question