Hello Student,
I guess you are preparing for competitive exams like NEET and JEE. I myself am a ranker in NEET(AIR 3166) and had many friends who cracked JEE mains with a good rank. The simple answer to you question would be big NO.
Just mugging up the formulas are not enough, until and unless your concepts are clear you will not understand where to apply these formulas. Moreover without practice there is a 100% chance that you will forget the formulas or get confused over which formula to apply while solving the exam paper.
My suggestion would be
You can refer to our Mock test facilities from the link below
JEE : https://learn.careers360.com/knockoutfull-jee-main-april/?icn=c360-engineering-jee-knockout-moneyback-learn&ici=exit-intent
NEET : https://learn.careers360.com/knockoutfull-neet-may/?icn=neet-knockout-lpage&ici=navigation-header_neet
Hope this helps.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile