If you are a NIOS Class 10 student preparing for the Mathematics 211 exam in 2026, this page gives you the most important chapter-wise objective and numerical questions directly from the NIOS Mathematics 211 Book Class 10. For complete stepwise solutions, contact Unnati Education on 9654279279 or 9899436384.

NIOS Class 10 Mathematics (211) Important Questions – Quick Overview

When you go through the NIOS Class 10 Maths 211 Book, you realise that the chapters are wide and the topics are many. That is why having a focused question booklet saves you weeks of effort.

What Are NIOS Class 10 Mathematics 211 Important Questions 2026?

Let me explain this simply. Every year, certain types of questions show up in the NIOS Mathematics 211 paper again and again. Our important question booklet collects all those questions, chapter by chapter, from the NIOS Maths 211 Class 10 Book. These are not just random questions pulled from the internet. They are selected after carefully studying years of NIOS exam patterns.

When you buy this booklet from Unnati Education, you get two things together. First, the questions themselves. Second, complete stepwise solutions so you understand exactly how each answer is reached. If you also need your NIOS Class 10 TMA solved for Mathematics 211, our team handles that too with 100 percent accuracy.

Chapter-Wise Important Objective and Numerical Questions for NIOS Mathematics Code 211

These are sample questions from each module of the NIOS Mathematics 211 Book Class 10. The complete booklet with all questions and solutions is available through Unnati Education.

Module I – Algebra

Lesson 1 – Number System – Important Questions

MCQ Samples:

• Which of the following is an irrational number? A. 0.333... B. √2 C. 22/7 D. 3/4
  Answer: B
• The product of a rational and an irrational number is: A. Always rational B. Always irrational C. Always an integer D. Sometimes rational
  Answer: B

Fill in the Blanks Samples:

• The decimal expansion of a rational number is either ______ or non-terminating repeating.
  Answer: terminating
• √2 is an example of an ______ number.
  Answer: irrational
• Every integer is a ______ number.
  Answer: rational

True or False Samples:

• Every natural number is a whole number. – True
• Zero is a natural number. – False
• Pi is a rational number. – False

Lesson 2 – Exponents and Radicals – Important Questions

MCQ Samples:

• The value of (27)^(2/3) is: A. 9 B. 3 C. 27 D. 81
  Answer: A
• The value of 2⁰ + 3⁰ + 4⁰ is: A. 0 B. 1 C. 3 D. 9
  Answer: C

Fill in the Blanks Samples:

• a⁰ = ______ for any non-zero value of a.
  Answer: 1
• (aᵐ)ⁿ = ______.
  Answer: aᵐⁿ

Lesson 3 – Algebraic Expressions and Polynomials – Important Questions

MCQ Samples:

• The degree of the polynomial 3x⁴ – 2x² + 5 is: A. 2 B. 3 C. 4 D. 5
  Answer: C
• The zero of the polynomial p(x) = x – 5 is: A. 0 B. 5 C. –5 D. 1
  Answer: B

Fill in the Blanks Samples:

• A polynomial with one term is called a ______.
  Answer: monomial
• The zero of the polynomial p(x) = x – 5 is ______.
  Answer: 5

Lesson 4 – Special Products and Factorization – Important Questions

This chapter has one of the highest chances of appearing in the NIOS Mathematics 211 paper. Students who skip identity-based questions always regret it on exam day.

MCQ Samples:

• What is the value of (2a + 3b)² – (2a – 3b)²? A. 24ab B. 48ab C. 12ab D. 36ab
  Answer: B
• Find the value of 508 × 492 using the special product identity. A. 249936 B. 249964 C. 248964 D. 250036
  Answer: A
• What is the complete factorization of x⁴ – 81y⁴? A. (x² + 9y²)(x² – 9y²) B. (x + 3y)(x – 3y)(x² + 9y²) C. Both A and B D. None of these
  Answer: C
• What is the HCF of x² – 4 and x² + 4x + 4? A. x – 2 B. x + 2 C. (x – 2)(x + 2) D. x² + 4
  Answer: B
• What is the LCM of (x – 2)² and (x – 2)⁴? A. (x – 2)² B. (x – 2)³ C. (x – 2)⁴ D. (x – 2)⁵
  Answer: C
• Find the value of 993 × 996. A. 989028 B. 989000 C. 989999 D. 998000
  Answer: A
• What is the HCF of 4x²y and x³y²? A. x²y B. xy² C. x³y D. x²
  Answer: A

Fill in the Blanks Samples:

• The value of (2a + 3b)² – (2a – 3b)² is ______.
  Answer: 48ab
• The identity (a + b)(a² – ab + b²) simplifies to ______.
  Answer: a³ + b³
• The cube of (a – b) is ______.
  Answer: a³ – 3a²b + 3ab² – b³
• The simplified value of 993 × 996 is ______.
  Answer: 989028
• The expansion of (3x + 2y)³ is ______.
  Answer: 27x³ + 54x²y + 54xy² + 8y³
• The factorization of x³ – 64 is ______.
  Answer: (x – 4)(x² + 4x + 16)
• The rational expression (x² – 1)/(x – 1) simplifies to ______.
  Answer: x + 1
• The factorization of x² – 6x + 9 is ______.
  Answer: (x – 3)²
• The HCF of x² – 4x + 3 and x² – 3x + 2 is ______.
  Answer: x – 1

True or False Samples:

• The identity (a + b)(a² – ab + b²) = a³ – b³. – False
• x³ – 27 can be factorized as (x – 3)(x² + 3x + 9). – True
• The cube of (a – b) is a³ – 3a²b – 3ab² – b³. – False
• x² – 6x + 9 = (x + 3)². – False
• The identity (a – b)(a² + ab + b²) = a³ – b³. – True
• x³ + 8 = (x + 2)(x² – 2x + 4). – True
• (a + b)³ – (a – b)³ = 2ab(3a² + b²). – True

Lesson 5 – Linear Equations – Important Questions

MCQ Samples:

• The solution of 2x + 5 = 13 is: A. x = 3 B. x = 4 C. x = 6 D. x = 9
  Answer: B
• For the pair of equations 2x + y = 5 and 4x + 2y = 10, the system is: A. Inconsistent B. Unique solution C. Infinitely many solutions D. None
  Answer: C

Fill in the Blanks:

• A linear equation in two variables has ______ solutions.
  Answer: infinitely many

Lesson 6 – Quadratic Equations – Important Questions

MCQ Samples:

• The discriminant of ax² + bx + c = 0 is: A. b² + 4ac B. b² – 4ac C. 4ac – b² D. b² – ac
  Answer: B
• The roots of x² – 5x + 6 = 0 are: A. 2 and 3 B. 1 and 6 C. 2 and 6 D. 3 and 6
  Answer: A

Fill in the Blanks:

• The sum of roots of ax² + bx + c = 0 is ______.
  Answer: –b/a
• The product of roots of ax² + bx + c = 0 is ______.
  Answer: c/a

If you need help understanding quadratic problems in depth through NIOS Class 10 Important Questions material, Unnati Education provides complete chapter-wise support.

Lesson 7 – Arithmetic Progression – Important Questions

MCQ Samples:

• The nth term of an AP with first term a and common difference d is: A. a + nd B. a + (n – 1)d C. a – (n – 1)d D. na + d
  Answer: B
• The common difference of the AP 3, 7, 11, 15 is: A. 3 B. 4 C. 7 D. 11
  Answer: B

Fill in the Blanks:

• The sum of first 10 natural numbers is ______.
  Answer: 55
• If a = 5, d = 3, n = 10, then the 10th term is ______.
  Answer: 32

Module II – Commercial Mathematics

Lesson 8 – Percentage and Its Applications – Important Questions

MCQ Samples:

• A shirt costs Rs. 500 and is sold for Rs. 600. What is the profit percentage? A. 10% B. 15% C. 20% D. 25%
  Answer: C
• Simple interest on Rs. 1000 at 5% per annum for 3 years is: A. Rs. 100 B. Rs. 150 C. Rs. 200 D. Rs. 250
  Answer: B

Fill in the Blanks:

• Profit % = (Profit / Cost Price) × ______.
  Answer: 100
• Simple Interest = (P × R × T) / ______.
  Answer: 100

Module III – Geometry

Lesson 10 – Lines and Angles – Important Questions

MCQ Samples:

• If two parallel lines are cut by a transversal, alternate interior angles are: A. Supplementary B. Complementary C. Equal D. Different
  Answer: C

True or False:

• Vertically opposite angles are equal. – True
• The sum of all angles around a point is 360°. – True

Lesson 15 – Circle – Important Questions

MCQ Samples:

• The angle subtended by a diameter at any point on the circle is: A. 45° B. 60° C. 90° D. 180°
  Answer: C
• Equal chords of a circle subtend ______ angles at the centre. A. Unequal B. Equal C. Complementary D. Supplementary
  Answer: B

Students who also need NIOS Class 10 Intext and Terminal Questions for Geometry will find Unnati Education's solutions very helpful for understanding theorems and their proofs step by step.

Module IV – Mensuration

Lesson 20 and 21 – Perimeter, Area, Surface Area and Volume – Important Questions

MCQ Samples:

• The area of a triangle with base 8 cm and height 5 cm is: A. 13 cm² B. 20 cm² C. 40 cm² D. 80 cm²
  Answer: B
• The volume of a cube with side 4 cm is: A. 16 cm³ B. 24 cm³ C. 48 cm³ D. 64 cm³
  Answer: D
• The curved surface area of a cylinder with radius r and height h is: A. πr²h B. 2πrh C. 2πr(r + h) D. πr(r + h)
  Answer: B

Fill in the Blanks:

• Area of a rectangle = Length × ______.
  Answer: Breadth
• Total surface area of a sphere = ______.
  Answer: 4πr²
• Volume of a cone = (1/3)πr² × ______.
  Answer: h

Module V – Trigonometry

Lesson 22 and 23 – Trigonometry – Important Questions

MCQ Samples:

• In a right triangle, sin θ is equal to: A. Adjacent/Hypotenuse B. Opposite/Adjacent C. Opposite/Hypotenuse D. Hypotenuse/Opposite
  Answer: C
• The value of sin²θ + cos²θ is always: A. 0 B. 2 C. 1 D. Depends on θ
  Answer: C
• The value of sin 30° is: A. 1 B. 1/√2 C. √3/2 D. 1/2
  Answer: D
• The value of tan 45° is: A. 0 B. 1 C. √3 D. 1/√3
  Answer: B

Fill in the Blanks:

• sin²θ + cos²θ = ______.
  Answer: 1
• 1 + tan²θ = ______.
  Answer: sec²θ
• tan 30° = ______.
  Answer: 1/√3
• sin 90° = ______.
  Answer: 1

Module VI – Statistics

Lesson 25 and 26 – Central Tendency and Probability – Important Questions

MCQ Samples:

• The mean of 5, 10, 15, 20, 25 is: A. 10 B. 15 C. 20 D. 25
  Answer: B
• The mode of 2, 3, 3, 4, 5, 5, 5, 6 is: A. 3 B. 4 C. 5 D. 6
  Answer: C
• The probability of an impossible event is: A. 1 B. 0.5 C. 0 D. 2
  Answer: C
• A die is rolled once. The probability of getting a number greater than 4 is: A. 1/6 B. 1/3 C. 1/2 D. 2/3
  Answer: B

Fill in the Blanks:

• Mean = Sum of observations / ______.
  Answer: Number of observations
• P(E) + P(not E) = ______.
  Answer: 1
• The probability of a sure event is ______.
  Answer: 1
• P(getting an even number on a die) = ______.
  Answer: 1/2

Most Repeated Topics in NIOS Mathematics 211 Exams

If you also need the NIOS Class 10 question paper from previous years for Mathematics 211, Unnati Education provides complete sets with solutions on request.

Why Solving Chapter-Wise Objective Questions Improves Scores in Mathematics

Here is something every student needs to understand. Reading formulas and solving questions are two completely different things. You may know that the nth term of an AP is a + (n – 1)d but if you have never applied it in an MCQ under time pressure, you will be slow on exam day. That is exactly what our booklet fixes.

Mathematics 211 has six modules and twenty-six lessons. You cannot afford to prepare all of them equally in the time you have. Our chapter-wise important questions tell you exactly which lessons matter most and what types of questions to focus on. Students who used this approach in previous years consistently scored better than those who just read the textbook.

Common mistakes that cost marks in Mathematics:

• Memorizing identities like (a + b)³ without practising their application in numerical problems
• Skipping commercial mathematics chapters because they seem simple, and then losing easy marks
• Not memorizing the trigonometric ratio table for special angles 0°, 30°, 45°, 60°, and 90°
• Ignoring probability and statistics, which are the shortest chapters with the most predictable MCQs every year

Important Dates for NIOS Class 10 Mathematics 2026

Who Should Use This Important Question Bank

This booklet works best for NIOS Class 10 students who want focused, chapter-wise revision for the 2026 Mathematics 211 exam. If you are short on time and need to cover the most important questions from all six modules without going through the entire textbook again, this is the resource for you. Students targeting 70 or above will find this booklet the most practical tool available.

About Unnati Education – NIOS Support Since 2010

Unnati Education has been working with NIOS students since 2010. We know exactly what kinds of questions appear in NIOS exams and how students need to prepare. Our Mathematics 211 important question booklet is built from the NIOS Maths 211 Book PDF and covers all 26 lessons with complete objective questions and stepwise solutions. We also provide solved TMAs, previous year papers, practical files, and chapter-wise notes for all NIOS subjects. Everything is updated as per the latest NIOS guidelines.

How to Get Complete Answers and Study Material

What you see on this page is only a sample. The full booklet covers every lesson across all six modules with MCQs, fill in the blanks, true or false, and match the following, all with complete and accurate answer keys. For previous year papers, TMA solutions, or any other study material for Mathematics 211, contact Unnati Education today.

Phone and WhatsApp: 9654279279 or 9899436384

Website: unnatieducations.com

Frequently Asked Questions

Q1. Is this NIOS Mathematics 211 Book Class 10 important question booklet updated for the 2026 exam?

Yes, this booklet is completely updated for the 2026 NIOS Mathematics 211 exam. Every question is based on the current syllabus and covers all six modules with MCQs, fill in the blanks, true or false, and numerical problems. Practising from this booklet regularly will help you build calculation speed and confidence before your actual exam.

Q2. Where can I get the complete stepwise solutions for the NIOS Maths 211 important questions on this page?

Complete stepwise solutions for all questions in this booklet are available through Unnati Education. Call or WhatsApp us on 9654279279 or 9899436384 and we will send you the full chapter-wise booklet with verified solutions. Every numerical comes with a clear working so you understand the method, not just the answer.

Q3. Does the booklet cover all modules including Geometry, Trigonometry, and Statistics?

Yes, the full booklet covers all 26 lessons across all six modules. This includes Algebra, Commercial Mathematics, all Geometry chapters, Mensuration, Trigonometry with special angle values, and Statistics with probability. Every chapter has its own set of objective questions with complete answer keys and solution steps.

Q4. Can I also get NIOS Mathematics 211 intext answers and terminal questions from Unnati Education?

Yes, Unnati Education provides complete solutions for NIOS Mathematics 211 intext answers and terminal questions separately on request. Contact us on WhatsApp or phone to get these along with the objective question booklet. We also provide any additional NIOS Class 10 Mathematics study material you may need for your 2026 exam.

Q5. I also need previous year Mathematics question papers. Can Unnati Education help?

Absolutely. Unnati Education provides NIOS Previous Year Question Paper with full solutions for Mathematics 211 and all other NIOS subjects. Whether you need TMA solutions, practical files, chapter-wise notes, or previous papers alongside this booklet, our team is ready to help you prepare completely for your NIOS Class 10 Mathematics 211 exam in 2026.