Important Questions for CBSE Class 11 Maths MyClass24
Not every chapter in the CBSE Class 11 Maths syllabus carries the same weight in the final exam, yet most students spend equal time on all of them. A smarter approach is to first know which units bring the most marks, then focus important-question practice there before moving to lighter chapters. This page from MyClass24 breaks the syllabus down by unit weightage, lists the important questions typically asked from each high-scoring unit, and gives you the core formulas in compact tables you can revise anywhere, on any device.
The questions listed on this page are drawn from patterns seen across CBSE sample papers, school unit tests, and the style of questioning used in recent board examinations. Rather than a random collection of problems, they are grouped by the unit that carries the most marks, so your practice time translates directly into a higher score instead of being spread thinly across topics that appear only once or twice in a paper.
Find the Chapter-wise PDF of Important Questions for CBSE Class 11 Maths
Unit-Wise Weightage in the CBSE Class 11 Maths Paper
The CBSE Class 11 Maths paper is divided into five broad units. Knowing the approximate mark share of each helps you allocate revision time realistically instead of treating every chapter as equally urgent.
Approximate Unit Weightage
Unit | Chapters Covered | Approx. Weightage |
Sets and Functions | Sets, Relations & Functions, Trigonometric Functions | ~25 marks |
Algebra | Complex Numbers, Linear Inequalities, P&C, Binomial Theorem, Sequences & Series | ~30 marks |
Coordinate Geometry | Straight Lines, Conic Sections, Introduction to 3D Geometry | ~10 marks |
Calculus | Limits and Derivatives | ~10 marks |
Statistics and Probability | Statistics, Probability | ~10 marks |
High-Weightage Chapters: Important Questions and Formulas
Trigonometric Functions
Being part of the highest-weightage unit, this chapter is asked in almost every important-question list. Practice proving identities, finding the general solution of trigonometric equations, and converting between degree and radian measure, since these three question styles repeat most often.
Must-Know Trigonometry Formulas
Formula Type | Expression |
Degree-Radian link | 180° = π radians |
Compound angle | cos(A+B) = cosA cosB − sinA sinB |
Double angle | cos2A = 2cos²A − 1 = 1 − 2sin²A |
General solution | cosθ = cosα ⇒ θ = 2nπ ± α, n ∈ Z |
Permutations, Combinations and Binomial Theorem
These two chapters together form a major share of the Algebra unit and are favourites for 4 and 6-mark questions. Typical important questions ask you to arrange letters of a word with restrictions, choose committees under given conditions, or find a specific term in a binomial expansion.
Must-Know Formulas – P&C and Binomial Theorem
Formula Type | Expression |
Permutation | ⁿPr = n! / (n − r)! |
Combination | ⁿCr = n! / [r!(n − r)!] |
General term (Binomial) | T(r+1) = ⁿCr x^(n−r) a^r |
Sum of all coefficients | Put x = 1 in the expansion ⇒ total = 2^n |
Sequences and Series
Questions here typically test the nth term or sum of n terms of an AP or GP, insertion of arithmetic or geometric means between two numbers, and the relationship between AM and GM. Word problems that model real growth situations using GP are also common in the important-question lists schools circulate.
Must-Know Formulas – Sequences and Series
Formula Type | Expression |
nth term of AP | an = a + (n − 1)d |
Sum of n terms (AP) | Sn = n/2 [2a + (n − 1)d] |
Sum of n terms (GP) | Sn = a(r^n − 1)/(r − 1), r ≠ 1 |
Sum to infinity (GP) | S∞ = a/(1 − r), |r| < 1 |
Straight Lines and Limits & Derivatives
Although each carries lighter weightage individually, these chapters are scoring if the basic formulas are firm. Straight-line questions usually ask for the equation of a line under given conditions or the distance between a point and a line, while Limits and Derivatives questions test standard limit evaluation and differentiation using first principles or standard rules.
Must-Know Formulas – Coordinate Geometry and Calculus
Formula Type | Expression |
Slope of a line | m = (y2 − y1)/(x2 − x1) |
Point-slope form | y − y1 = m(x − x1) |
Distance point to line | d = |Ax1 + By1 + C| / √(A² + B²) |
Standard limit | lim(x→0) (sinx/x) = 1 |
Derivative of xⁿ | d/dx(x^n) = n x^(n−1) |
Common Mistakes Students Make in Important Questions
Mixing up permutation and combination formulas when a word problem does not clearly say 'arrange' or 'select'.
Forgetting the ± sign while writing the general solution of a trigonometric equation.
Applying the AP sum formula to a GP question, especially under exam time pressure.
Skipping the domain check while finding the range of a function, leading to an incomplete answer.
Writing the formula correctly but substituting values in the wrong order, especially in the distance and slope formulas.
A One-Week Revision Plan Using Weightage
Days 1-2: Trigonometric Functions and Sequences & Series, since these are high-weightage and formula-heavy.
Days 3-4: Permutations & Combinations and Binomial Theorem, focusing on word-problem practice.
Day 5: Straight Lines and Limits & Derivatives, revising formulas from the tables above.
Day 6: Statistics, Probability and Complex Numbers for quick, formula-based recall.
Day 7: Attempt one full previous year's paper under timed conditions to test everything together.
Why MyClass24 for Your Class 11 Maths Preparation
MyClass24 designs its Maths resources around how CBSE actually distributes marks, not just around the order chapters appear in the textbook. Alongside this weightage-based important-question list, our team provides chapter notes, formula sheets and practice worksheets that follow the current CBSE curriculum. Keep this page bookmarked and revisit the tables above through the term, especially in the final week before your exam, so your revision stays focused on what earns marks rather than what simply feels familiar.