Define empirical formula. [1 mark Q&A]
Learn how to define empirical formula with this concise 1 Mark Q&A by qChem+. Understand…

77 Students & counting
Find the course you need
Join qChem+ for HSC 2nd Year Chemistry (English Version) coaching in Pallabi, Mirpur, Dhaka. Master advanced chemistry concepts, improve CQ and MCQ problem-solving skills, and...
Join qChem+ for HSC 2nd Year Chemistry (Bangla Version) coaching in Pallabi, Mirpur, Dhaka. Master advanced chemistry concepts, improve CQ and MCQ problem-solving skills, and...
Join qChem+ for HSC 1st Year Chemistry (English Version) coaching in Pallabi, Mirpur, Dhaka. Build strong chemistry concepts, improve problem-solving skills, and prepare effectively for...
Join qChem+ for HSC 1st Year Chemistry (Bangla Version) coaching in Pallabi, Mirpur, Dhaka. Build strong chemistry concepts, improve problem-solving skills, and prepare effectively for...
Join qChem+ for Cambridge AS Level Chemistry Coaching in Dhaka. Build strong Chemistry concepts with less memorization, solve past papers, and prepare effectively for exams.
Join qChem+ for Cambridge A Level Chemistry Coaching in Dhaka 06 months course. Master Physical, Organic, and Inorganic Chemistry through concept-based learning, Cambridge-style exam preparation,...
PREMIUM LEARNING
qChem+ is led by Mr. Rohan Ahmed, who has vast experience in teaching Chemistry (Ex. Lecturer at Milestone and Cambrian Colleges). He has over 5 years of Chemistry-based industry expertise (Multinational third-party testing laboratory, Pharmaceutical Quality Control Laboratory). He can relate the theoretical chemistry concepts to the application in practical life.
“Understand Chemistry logically instead of memorizing randomly.” – that is one of our core values. Our classes are also designed to cater the concepts clearly to the students.
Master past papers, board questions, MCQs, CQ patterns, and common exam traps. We plan the classes inclusive of problem-solving from the past papers, so that the students can relate the acquired concept to the real questions in exams.
Our students regularly receive organized notes, shortcuts, and problem-solving techniques. We have over 1500 different handouts ready to help the students.
Students facing challenges understanding their Chemistry or with scores in the exams are specially dealt with our proven methods.

CHOOSE FROM ANY THESE
Learn how to define empirical formula with this concise 1 Mark Q&A by qChem+. Understand…
Learn how to properly answer: What is electron affinity? or Define electron affinity, 1 mark…
Learn how to properly answer: What is ionization energy? or Define ionization energy, 1 mark…
Learn what is ionization energy with proper concepts.
qChem+ brings you HSC 2025 Chemistry 1st Paper MCQ Question…
qChem+ brings you HSC 2025 Chemistry 1st Paper MCQ Question…
qChem+ brings you HSC 2025 Chemistry 1st Paper MCQ Question…
qChem+ brings you HSC 2025 Chemistry 1st Paper MCQ Question…
qChem+ brings you HSC 2025 Chemistry 1st Paper MCQ Question…
qChem+ brings you HSC 2025 Chemistry 1st Paper MCQ Question…
qChem+ brings SSC 2026 Chemistry MCQ Question Dhaka Board English…
qChem+ brings for you SSC 2026 Chemistry MCQ Question Dhaka…
Mark Scheme of Cambridge International AS and A Level Chemistry…
Question Paper of Cambridge International AS and A Level Chemistry…
Announcements / Offers / Information
Message from
I’m the teacher at qChem+. I warmly welcome you to my education center.
Being a passionate and academically successful Chemistry graduate from the Comilla University, and as a student of Bangladesh University of Engineering and Technology (BUET), I have grown deep expertise in the subject; and a great zeal for teaching the subject to young students.
Having worked in the industry (Pharmaceutical QC/QA, MNC Third-party Testing Labs) for over 5.5 years, it has catered me with first-hand experience of the applications of Chemistry in real world, which helps me explain different theoretical aspects more clearly to my students.
At last, but not the least, having being a Lecturer in Chemistry at college levels for Cambrian College and Milestone College have given me the experience and skills of teaching in large institutions and big classrooms, which has adorned me with the confidence to build qChem+ : The Home of Chemistry.
Presently, I’m offering Chemistry Courses for different mediums and curriculums:
You can also visit my profile here: rohanahmed.qchemplus.com



"I am Maktum Masroor Amyo, an HSC 2026 student of Mirpur English Version College. My experience learning Chemistry with Rohan Ahmed through qChem+ has been outstanding. Before joining, I found many Chemistry topics difficult and confusing, but Sir's clear explanations and concept-based teaching approach have made the subject much easier and more enjoyable to learn.Rohan Ahmed Sir teaches every chapter with great care, focusing on conceptual understanding, problem-solving skills, and effective exam preparation. His guidance has helped me strengthen my fundamentals, improve my confidence, and perform better academically.I highly recommend qChem+ and Rohan Ahmed Sir to SSC and HSC students, especially those from Bangla Medium and English Version backgrounds, who want to build a strong foundation in Chemistry and achieve excellent results. Thank you, Sir, for your continuous support and dedication to your students' success."
Call us directly
Address
Not a member yet? Register now
Are you a member? Login now