CBSE Class 10 Science Term 2 Sample Paper 2022 Set 03 Solved

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Read the CBSE Class 10 Science Term 2 Sample Paper 2022 Set 03 Solved below. Find downloadable Class 10 Science sample papers complete with answers, built according to the 2026-27 assessment guidelines of CBSE, NCERT, and KVS. Reviewing these sets helps every Class 10 learner measure their readiness for upcoming tests.

Model Papers: Class 10 Science (CBSE)

Want to know which chapters carry high marks? Working through our Class 10 Science model papers helps you learn chapter weightage and expected test difficulty. Solving these guess papers enables Class 10 students to find weak spots and practice better time management. We also recommend checking our previous years' Class 10 Science Question Papers for extra practice.

Science Sample Papers for Class 10 (2026-27)

Question : An element ‘X’ belongs to 3rd period and group 17 of the periodic table. State its valency. Justify your answer with reason.
OR
Choose from the following :
4Be, 9F, 19K, 20Ca
(a) The element having one electron in the outermost shell.
(b) Two elements of the same group
Answer :  As element X belongs to group 17, it will have 7 electrons in its outermost shell. Moreover, X belongs to period number 3 so, it will have 3 shells.
Electronic configuration of X = 2, 8, 7
Valency of element X
= 8 – (Number of valence electrons)
= 8 – 7 = 1
OR
The electronic configurations of the given elements are :
4Be = 2, 2
9F = 2, 7
19K = 2, 8, 8, 1
20Ca = 2, 8, 8, 2
(a) Potassium (K) has one electron in its outermost shell.
(b) Be and Ca have two electrons in their outermost shells hence, they belong to same group.
 
Question :  What do you mean by biological magnification?
Answer : Biological magnification or biomagnification is the process of increase in amount of some toxic, nonbiodegradable substances such as DDT and heavy metals in successive trophic levels of a food chain. It results in accumulation of highest concentration of these toxins in topmost trophic level.
 
Question : Characters that are transmitted from parents to offsprings during sexual reproduction show
(a) only similarities with parents (b) only variations with parents
(c) both similarities and variations with parents (d) neither similarities nor variations.
Answer : (c) : When germ cells (gametes) from two individuals combine during sexual reproduction to form a new individual, it results in combination of characters of two different individuals. Hence, the offspring resembles parents in some characters as well as differs from them in some other characters i.e., both similarities and variations are exhibited.
 
Question : Mendel crossed a pure recessive wrinkled seeded pea plant with a pure dominant round seeded plant. The first generation of hybrids from the cross should show
(a) 50% wrinkled seeded and 50% round seeded plants
(b) all round seeded plants
(c) 75% round seeded and 25% wrinkled seeded plants
(d) all wrinkled seeded plants.
Answer : (b) : In first generation all plants will have one dominant allele and one recessive allele. Presence of dominant allele in all progenies will produce all round seeded plants in F1 generation.
OR
The crossing of a homozygous tall plant with a dwarf plant would yield plants in the ratio of
(a) two tall and two dwarf
(b) one homozygous tall, one homozygous dwarf and two heterozygous tall
(c) all homozygous dwarf
(d) all heterozygous tall.
Answer : (d) : The crossing of a homozygous tall plant with a dwarf would yield all heterozygous tall plants containing both the alleles. Tallness is a dominant trait over dwarfism.
So even in heterozygous condition all plants are tall.
pi-
 
 
Question : In the given food chain suppose the amount of energy at fourth trophic level is 5 KJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
(a) 5 KJ (b) 50 KJ (c) 500 KJ (d) 5000 KJ
Answer : (d) : In the given food chain, if the amount of energy at fourth trophic level is 5 KJ, then 5000 KJ will be the energy available at the producer level. As only 10% of energy is transferred to next higher trophic level, hence, 500 KJ energy will be stored in body of grasshopper and 50 KJ in frog. 5 KJ energy will be present in the body of snake and 0.5 KJ in hawk.

Free study material for Science

Exam Preparation Sample Paper for Class 10 Science CBSE Class 10 Science Term 2 Sample Paper 2022 Set 03 Solved

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Retrieve the CBSE Class 10 Science Term 2 Sample Paper 2022 Set 03 Solved from our portal to kickstart your targeted revision. Familiarity with standard question patterns helps Class 10 students excel in examinations. Practice these recent Science sample sets to cover expected test scenarios effectively. Take advantage of the PDF format option for offline practice, complete with timed home simulations.

Key Advantages of Solving CBSE Class 10 Science Term 2 Sample Paper 2022 Set 03 Solved

  • New Question Bank: This set has fresh questions for Science which are different from previous years.
  • Exam Pattern Knowledge: Solving more sets will help you to understand the weightage of each chapter in Class 10 and also the type of questions asked.
  • Identify Weak Areas: Comparing your score in each set helps to find out topics in Class 10 Science for which you need hard work.
  • Speed and Accuracy: Attempting MCQ questions and long-form problems for Class 10 Science makes you faster and better and you will be able to finish your exam on time.

Post-Practice Strategy for Class 10 Science

  1. Verify Answers: Compare your responses against professional teacher solutions provided in the Science Sample Paper PDF.
  2. Error Analysis: Class 10 learners must review incorrect answers carefully to understand underlying mistakes.
  3. Concept Reinforcement: Review difficult topics using the official NCERT book for Class 10 Science before re-attempting problems.
  4. Consistent Drills: Complete multiple Science sample sets online to solidify confidence ahead of CBSE examinations.

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How can practicing CBSE Class 10 Science Term 2 Sample Paper 2022 Set 03 Solved help in exam preparation?

Practicing this Science paper helps in time management and identifying important topics. For Class 10, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.

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