NCERT Exemplar Class 10 Science Chapter 8 PDF Download

The NCERT Exemplar Class 10 Science book for Chapter 8, Heredity, gives higher-order questions beyond the main textbook. This page hosts the free NCERT Exemplar PDF, plus a quick guide on using it for your CBSE board exam 2026-27.

• What you get: the full official Chapter 8 Exemplar PDF, free to read or download here.
• Question types: MCQs, short answer, and long answer questions on Mendel's laws, monohybrid and dihybrid crosses, and sex determination.
• Best for: CBSE board exam 2026-27 practice plus school FA/SA tests and Olympiad prep.

Read or download the complete Chapter 8 Heredity PDF from the card above. It is published by NCERT and mapped to the 2026-27 syllabus.

An official NCERT Exemplar PDF plus a study guide by Collegedunia Science experts.

Also Check:

• NCERT Exemplar Solutions Class 10 Science Chapter 8
• NCERT Solutions Class 10 Science Chapter 8

What is the NCERT Exemplar Class 10 Science Book?

The NCERT Exemplar Class 10 Science is an extra problem book by NCERT, separate from your textbook. It carries tougher, thought-based questions. For Chapter 8, it tests how well you understand heredity through Mendel's experiments, dominant and recessive traits, monohybrid and dihybrid crosses, and sex determination, not just definitions.

• Made by NCERT: the same body that writes your textbook, so the level matches the CBSE Class 10 syllabus 2026-27.
• Higher-order thinking: questions give a cross, a ratio, or a situation and ask you to reason, not just recall.
• Board and beyond: many CBSE board and school questions follow this style, so teachers ask you to solve it.
• Free and official: the PDF here is the real NCERT book, nothing added or removed.

Heredity Class 10 Science Full Chapter Video

Source: Magnet Brains on YouTube

What is Inside Chapter 8 of the NCERT Exemplar Class 10 Science

Chapter 8 opens with a long set of MCQs, then short and long answer questions. Many are built around a cross and its expected ratio, so you practise working out the F1 and F2 progeny of a monohybrid or dihybrid cross such as RrYy crossed with RrYy.

Across these sections you meet the big ideas: inherited traits, dominant and recessive characters, genotype and phenotype, Mendel's monohybrid and dihybrid crosses, the 3:1 and 9:3:3:1 ratios, genes and chromosomes, and sex determination by X and Y chromosomes. Many questions also bring in gametes, the F1 and F2 generations, DNA and proteins, acquired versus inherited characters, and the father's role in deciding a child's sex, all CBSE favourites.

Question Types in the NCERT Exemplar Class 10 Science Chapter 8

Each question format trains a different skill for the CBSE board exam 2026-27.

• Single-correct MCQs: one option is right. They test a single idea, such as why tallness is dominant when a TT plant is crossed with a tt plant.
• Multiple-correct MCQs: two or more statements are correct, and you pick the right combination. They check deeper understanding of the characteristics of genes.
• Cross-based MCQs: you read a cross such as RRyy with rrYY and work out the F1 seeds, training Punnett-square thinking.
• Ratio MCQs: you find the ratio of pure tall to short plants in the F2 of a TT and tt cross, a common board pattern.
• Short answer (SA): you write two to three lines with a reason, such as how the sex of a newborn is determined.
• Long answer (LA): you write a full cross and explain each step, such as the progeny of a dihybrid cross.

Why Solve the NCERT Exemplar for Chapter 8 Heredity

The textbook teaches the chapter; the Exemplar tests whether you can use it. Solving it for Heredity is one of the surest ways to lift your Science score, as the questions match the toughest board questions.

• You separate genotype from phenotype cleanly. The Exemplar keeps testing this link. Knowing why two pink flowers can give red, pink, and white progeny in a 1:2:1 ratio is the most-tested idea here.
• You master Mendel's ratios. The 3:1 monohybrid ratio and the 9:3:3:1 dihybrid ratio appear again and again, so cross practice pays off.
• You handle sex-determination questions with confidence. Many questions ask how a newborn's sex is decided, why the father determines it, and why all human eggs carry an X chromosome, all CBSE favourites.
• You meet real-life examples. Tall and short pea plants, round and wrinkled seeds, yellow and green seeds, and human traits all appear.

For full worked answers, use the linked NCERT Exemplar Solutions page.

How to Use the NCERT Exemplar Class 10 Science Chapter 8 PDF

Treat the Exemplar as a practice book. This three-step routine keeps your study focused before the 2026-27 board exam.

• Step 1, learn first. Finish the chapter in your textbook and Notes page so you know Mendel's laws, monohybrid and dihybrid crosses, and sex determination.
• Step 2, attempt on your own. Open this PDF and try MCQs first, then short, then long answers. Write out every cross by hand.
• Step 3, check and fix. Open the Exemplar Solutions page and compare. Mark every wrong question and redo it next day.

Topics Covered in NCERT Exemplar Class 10 Science Chapter 8

Every question sits on a small set of core ideas. Master the points below to attempt the whole chapter and revise fast.

Master these nine ideas and you can answer almost every Chapter 8 Exemplar question.

Other Resources for Class 10 Science Chapter 8

Use the table below for the other free Collegedunia resources for this chapter.

NCERT Exemplar Book Class 10 Science: All Chapters

Use the table below to download the Exemplar PDF for any other Class 10 Science chapter (2026-27).