Dear student,

As per your profile you are an engineering aspirant currently in class 10th .

Hence, for taking up PCM in class 11th , you need score a minimum of 85% in class 10th board examination.

However, you may note that stream selection is done before board examination results are declared, hence a decent score between 80-85% is required during your preboards/prelims. Even , though stream may be changed after board result in case you do not get PCM as per prelim score .

So, try to give your best on both preboards/ prelims and board examination so that you get your preferred subjects as soon as as the stream selection starts.

Hope this helps.

All the best.