Molarity
M = n / V_L
One sheet · NCERT · Board revision
Class 11 Chemistry Formula Sheet
10 formulas from Mathematics and Science, chapter by chapter. Search, filter, copy, or print. This is a revision sheet — not a replacement for the textbook derivation.
Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.
🧪 Class 11 · Chemistry
Some Basic Concepts of Chemistry
Mole
n = given mass / molar mass
🧪 Class 11 · Chemistry
Structure of Atom
Photon
E = h ν = hc / λ
From chapter list
E=hν
🧪 Class 11 · Chemistry
Thermodynamics
First law (chemistry)
ΔU = q + w, w = −PΔV
Gibbs
ΔG = ΔH − TΔS
🧪 Class 11 · Chemistry
Equilibrium
Kc
K_c = [C]^c [D]^d / [A]^a [B]^b
Water
K_w = 10⁻¹⁴ at 25°C
pH
pH = −log₁₀ [H⁺]
From chapter list
Kc = [C]^c[D]^d/[A]^a[B]^b
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FAQs
Are these all official board formulas?
They are the standard NCERT relations used in CBSE Maths and Science papers. Always match the edition issued by your school.
Why are some Biology items short?
Biology is mostly definitions. Only equations and standard ratios (photosynthesis, Hardy–Weinberg, growth models) sit on this sheet.
Will a formula come as-is in the exam?
Often the paper asks you to use a formula, not recite it. Practise a numerical or a derivation after you memorise the line.