CBSE Class 10 Science Important Questions, MCQ's and HOTs in PDF

Important Question of Science Class 10 plays a vital role in scoring more marks in board exams. Get here all the Extra Questions for Class 10 Science are available in Printable format to increase your exam preparation. Here you may also find multiple choice questions, HOTS and Assertion and reasoning based questions for class 10 Science (Physics, Chemistry, and Biology) for both Term 1 and Term 2 exams with answers. Available CBSE NCERT Chapter Wise Questions for Class 10 Science with answers and solutions Pdf will surely encourage students to secure graceful marks in the board examinations. Access the below links & practice well for your science examination. All these Important Study Material for Class 10 Science shared by teachers, parents & students,  are as per latest NCERT and CBSE Pattern syllabus and assure great success in achieving high score in Final Examinations

Total Papers : 154

Carbon and Its Compounds Class 10 Important Questions with answers Chemical Reactions and Equation Class 10 Important Questions with answers Control and Coordination Class 10 Important Questions with answers Electricity Class 10 Important Questions with answers How Do Organisms Reproduce Class 10 Important Questions with answers Light Reflection and Refraction Class 10 Important Questions with answers Metals and Non-Metals Class 10 Important Questions with answers
Sustainable Management of Natural Resources Class 10 Important Questions with Answers Acids, Bases and Salts Class 10 Extra Questions with Answers Human Eye and Colourful World Class 10 Extra Questions with Answers Magnetic Effects of Electric Current Class 10 Extra Questions with Answers Periodic Classification of Elements Class 10 Extra Questions with Answers Sources of Energy Class 10 Extra Questions with Answers HOTS Questions for Class 10 Science Chapter 16 Sustainable Management of Natural Resources
HOTS Questions for Class 10 Science Chapter 15 Our Environment HOTS Questions for Class 10 Science Chapter 14 Sources of Energy HOTS Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current HOTS Questions for Class 10 Science Chapter 12 Electricity HOTS Questions for Class 10 Science Chapter 11 Human Eye and Colorful World HOTS Questions for Class 10 Science Chapter 10 Light Reflection and Refraction HOTS Questions for Class 10 Science Chapter 9 Heredity and Evolution
HOTS Questions for Class 10 Science Chapter 8 How Do Organisms Reproduce HOTS Questions for Class 10 Science Chapter 7 Control and Coordination HOTS Questions for Class 10 Science Chapter 6 Life Processes HOTS Questions for Class 10 Science Chapter 5 Periodic Classification of Elements HOTS Questions for Class 10 Science Chapter 4 Carbon and Its Compounds HOTS Questions for Class 10 Science Chapter 3 Metals and Non-Metals HOTS Questions for Class 10 Science Chapter 2 Acids, Bases and Salts
HOTS Questions for Class 10 Science Chapter 1 Chemical Reactions and Equation Assertion and Reason Questions for Class 10 Science Chapter 16 Sustainable Management of Natural Resources Assertion and Reason Questions for Class 10 Science Chapter 15 Our Environment Assertion and Reason Questions for Class 10 Science Chapter 14 Sources of Energy Assertion and Reason Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Assertion and Reason Questions for Class 10 Science Chapter 12 Electricity Assertion and Reason Questions for Class 10 Science Chapter 11 Human Eye and Colorful World Assertion and Reason Questions for Class 10 Science Chapter 10 Light Reflection and Refraction Assertion and Reason Questions for Class 10 Science Chapter 9 Heredity and Evolution Assertion and Reason Questions for Class 10 Science Chapter 8 How Do Organisms Reproduce Assertion and Reason Questions for Class 10 Science Chapter 7 Control and Coordination Assertion and Reason Questions for Class 10 Science Chapter 6 Life Processes Assertion and Reason Questions for Class 10 Science Chapter 5 Periodic Classification of Elements Assertion and Reason Questions for Class 10 Science Chapter 4 Carbon and Its Compounds Assertion and Reason Questions for Class 10 Science Chapter 3 Metals and Non-Metals Assertion and Reason Questions for Class 10 Science Chapter 2 Acids, Bases and Salts Assertion and Reason Questions for Class 10 Science Chapter 1 Chemical Reactions and Equation MCQ Questions for Class 10 Science Acids, Bases and Salts with answers MCQ Questions for Class 10 Science Carbon and Its Compounds with answers MCQ Questions for Class 10 Science Control and Coordination with answers MCQ Questions for Class 10 Science Electricity with answers MCQ Questions for Class 10 Science Heredity and Evolution with answers MCQ Questions for Class 10 Science How Do Organisms Reproduce with answers MCQ Questions for Class 10 Science Human Eye and Colorful World with answers MCQ Questions for Class 10 Science Life Processes with answers MCQ Questions for Class 10 Science Light Reflection and Refraction with answers MCQ Questions for Class 10 Science Metals and Non-Metals with answers MCQ Questions for Class 10 Science Our Environment with answers MCQ Questions for Class 10 Science Sources of Energy with answers MCQ Questions for Class 10 Science Sustainable Management of Natural Resources with answers MCQ Questions for Class 10 Science Periodic Classification of Elements with answers MCQ Questions for Class 10 Science Magnetic Effect of Electric Current with answers MCQ Questions for Class 10 Science Chemical Reactions and Equation with answers Extra Questions Control and Coordination Class 10 Science Chapter 7 Extra Question on Respirations Class 10 Class 10 Chemistry Revision Question Bank Atomic Physics Question Bank Class 10 - ICSE Board Important Questions on Energy Class 10 - ICSE Extra Questions of Atomic Structure and Rate of Reaction for Class 10 - ICSE Board Atomic Physics Extra Questions Class 10 - ICSE Board CBSE Class 10 Science HOTS Question Management of Natural Resources CBSE Class 10 Biology HOTS Question Our Environment CBSE Class 10 Biology HOTS Question Heredity and Evolution CBSE Class 10 HOTS Question How Do Organisms Reproduce CBSE Class 10 Science Control and Coordination HOTS Questions CBSE Class 10 Biology Life Processes HOTS Questions Class 10 Chemistry Revision Questions Class 10 Questions on Factors Affecting Rate of Photosynthesis Class 10 Questions on Gas Exchange in Plants Photosynthesis Important Questions ICSE Class 10 Biology Uniform Motion Important Questions ICSE Class 10 Class 10 Science Microscope Important Questions - 2021 CBSE Class 10 Chemistry Word Problem Based Questions CBSE Class 10 Science Practice Question Paper - 2020 Important Questions Magnetic Effects of Electric Current Class 10 Magnetic Effects of Electric Current Class 10 Questions Magnetic Effects of Electric Current MCQ Class 10 Science Sources of Energy Class 10 Science Important Questions MCQ Questions on Sources of Energy Class 10 Science Light Reflection and Refraction Class 10 Important Questions Light Reflection and Refraction Class 10 Numericals Light Reflection and Refraction Class 10 Science MCQ Numericals on Human Eye and Colourful World Class 10 Science Human Eye and Colourful World Class 10 MCQ Questions CBSE Class 10 Physics Important Questions Control and Coordination Class 10 Important Questions Control and Coordination Class 10 Science Question Bank PDF HOTS Questions on Control and Coordination Class 10 Science How Do Organisms Reproduce Class 10 Extra Questions How Do Organisms Reproduce Class 10 HOTS important questions Heredity and Evolution Class 10 Science Important Questions Heredity and Evolution Class 10 Science Extra Questions Our Environment Class 10 Science Extra Questions Our Environment Class 10 Science Important Questions Management of Natural Resources Class 10 Important Questions Management of Natural Resources Class 10 Extra Questions Important Questions of CBSE Class 10 Biology CBSE Class 10 Biology Important Questions CBSE Class 10 Biology Important Questions Chemical Reactions and Equations Class 10 Important Questions Chemical Reactions and Equations Class 10 Extra Questions Metals and Non Metals Class 10 Science Important Questions Acid Bases and Salts Class 10 Science Important Questions Acid Bases and Salts CBSE Class 10 Important Questions Metals and Non Metals Class 10 Science Extra Questions CBSE Class 10 Carbon and its compounds Important Questions Carbon and its Compounds Class 10 Extra Questions Periodic Classification of Elements Class 10 Important Questions Important Questions of Chemistry Class 10 CBSE Class 10 Chemistry Important Questions CBSE Class 10 Chemistry Questions Important Questions of Electricity Class 10 Science Electricity Class 10 Science Numericals MCQ on Electricity Class 10 Science Electricity Class 10 Science Extra Numerical Questions Life Processes Class 10 Science HOTS Questions Life Processes Class 10 Science Important Questions Important Questions of Life Processes Class 10 Science Life Processes Class 10 Science Extra Questions in PDF Our Environment Class 10 Science Important Questions with Answers - 3 Acids, Bases and Salts Class 10 Important Question with Answers How do Organisms Reproduce Class 10 Extra Questions and Answers Heredity and Evolution Class 10 Important Question with Answers Sources of Energy Class 10 Important Questions with Answers Light Reflection and Refraction Class 10 Extra Questions Electricity Class 10 Important Question Answers in PDF Life Processes Class 10 Important Questions with answers Important Questions for Class 10 Science Life Processes - 2 Important Questions for Class 10 Science Life Processes - 3 Carbon and its Compounds Class 10 Important Question with Answers Metals and Non Metals Class 10 Questions and Answers - 1 Metals and Non Metals Class 10 Questions and Answers - 3 Magnetic Effects of Electric Current Class 10 Questions and Answers - 1 Magnetic Effects of Electric Current Class 10 Questions with Answers Human Eye and Colourful World Important Questions with Answers Our Environment Class 10 Science Important Question Answers - 1 Our Environment Class 10 Science Important Questions with Answers - 2 Sources of Energy Class 10 Science Notes & Question Bank Light Chapter of Class 10 Science Notes & Question Bank Heredity and Evolution Class 10 Science Notes & Questions Questions & Notes of Control and Coordination World Class 10 Metals and Non Metals Class 10 Science Notes & Questions

Total Papers : 154

Class 10 Science Marks Distribution
Units Marks
Chemical Substances - Nature & Behaviour 25
World of Living 23
Natural Phenomenon 12
Effects of Current 13
Natural Resources 7
Total 80
Internal assessment 20
Grand Total 100

CBSE Class 10 Science Syllabus

  • Chemical Reactions and Equations
  • Acids, Bases and Salts
  • Metals and Non-Metals
  • Sources of energy
  • Life processes
  • Control and co-ordination in animals and plants
  • Our Environment
  • Current Electricity
  • Magnetic effects of Current
  • Carbon and its compounds
  • Periodic classification of elements
  • Light- Reflection and Refraction
  • The Human Eye and the Colourful World
  • Management of natural resources
  • Reproduction
  • Heredity and evolution

Theme: Materials

Unit I: Chemical Substances - Nature and Behaviour

Chemical reactions: Chemical equation, Balanced chemical equation, implications of a balanced chemical equation, types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, endothermic exothermic reactions, oxidation and reduction.
Acids, bases and salts: Their definitions in terms of furnishing of H+ and OH– ions, General properties, examples and uses, neutralization, concept of pH scale (Definition relating to logarithm not required), importance of pH in everyday life; preparation and uses of Sodium Hydroxide, Bleaching powder, Baking soda, Washing soda and Plaster of Paris.
Metals and nonmetals: Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention.
Carbon compounds: Covalent bonding in carbon compounds. Versatile nature of carbon. Homologous series. Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydro carbons and unsaturated hydrocarbons. Chemical properties of carbon compounds(combustion, oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents.

Theme: The World of the Living

Unit II: World of Living

Life processes: ‘Living Being’. Basic concept of nutrition, respiration, transport and excretion in plants and animals.
Control and co-ordination in animals and plants: Tropic movements in plants; Introduction of plant hormones; Control and co-ordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical co-ordination: animal hormones.
Reproduction: Reproduction in animals and plants (asexual and sexual) reproductive health - need and methods of family planning. Safe sex vs HIV/AIDS. Child bearing and women’s health.
Heredity and Evolution: Heredity; Mendel’s contribution- Laws for inheritance of traits: Sex determination: brief introduction: (topics excluded - evolution; evolution and classification and evolution should not be equated with progress).

Theme: Natural Phenomena

Unit III: Natural Phenomena

Reflection of light by curved surfaces; Images formed by spherical mirrors, centre of curvature, principal axis, principal focus, focal length, mirror formula (Derivation not required),magnification. Refraction; Laws of refraction, refractive index.
Refraction of light by spherical lens; Image formed by spherical lenses; Lens formula(Derivation not required); Magnification. Power of a lens. Functioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and lenses.
Refraction of light through a prism, dispersion of light, scattering of light, applications in daily life (excluding colour of the sun at sunrise and sunset).

Theme: How Things Work

Unit IV: Effects of Current

Electric current, potential difference and electric current. Ohm’s law; Resistance, Resistivity, Factors on which the resistance of a conductor depends. Series combination of resistors, parallel combination of resistors and its applications in daily life. Heating effect of electric current and its applications in daily life. Electric power, Interrelation between P, V, I and R.
Magnetic effects of current : Magnetic field, field lines, field due to a current carrying conductor, field due to current carrying coil or solenoid; Force on current carrying conductor,Fleming’s Left Hand Rule, Direct current. Alternating current: frequency of AC. Advantage of AC over DC. Domestic electric circuits.

Theme: Natural Resources

Unit V: Natural Resources

Our environment: Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Biodegradable and non-biodegradable substances.

PRACTICALS
Practical should be conducted alongside the concepts taught in theory classes

LIST OF EXPERIMENTS

  1. A. Finding the pH of the following samples by using pH paper/universal indicator:
    (i)  Dilute Hydrochloric Acid
    (ii)  Dilute NaOH solution
    (iii)  Dilute Ethanoic Acid solution
    (iv)  Lemon juice
    (v)  Water
    (vi) Dilute Hydrogen Carbonate solution

B. Studying the properties of acids and bases (HCl & NaOH) on the basis of their reaction with:
1. Litmus solution (Blue/Red)
2. Zinc metal
3. Solid sodium carbonate

2. Performing and observing the following reactions and classifying them into:
A. Combination reaction
B. Decomposition Reaction
C. Displacement Reaction
D. Double displacement reaction
(i) Action of water on quicklime
(ii) Action of heat on ferrous sulphate crystals
(iii) Iron nails kept in copper sulphate solution
(iv) Reaction between sodium sulphate and barium chloride solutions

3. Observing the action of Zn, Fe, Cu and Al metals on the following salt solutions:
i) ZnSO4(aq)
ii) FeSO4(aq)
iii) CuSO4(aq)
iv) Al2 (SO4)3(aq)
Arranging Zn, Fe, Cu and Al (metals) in the decreasing order of reactivity based on the above result.

4. Studying the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance. Also plotting a graph between V and I
5. Determination of the equivalent resistance of two resistors when connected in series and parallel.
6. Preparing a temporary mount of a leaf peel to show stomata.
7.Experimentally show that carbon dioxide is given out during respiration.

8. Study of the following properties of acetic acid (ethanoic acid):
i) Odour
ii) solubility in water
iii) effect on litmus
iv) reaction with Sodium Hydrogen Carbonate

9. Study of the comparative cleaning capacity of a sample of soap in soft and hard water.

10. Determination of the focal length of:
i) Concave mirror
ii) Convex lens by obtaining the image of a distant object.

11. Tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. Measure the angle of incidence, angle of refraction, angle of emergence and interpret the result.

12. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides.

13. Tracing the path of the rays of light through a glass prism.

14. Identification of the different parts of an embryo of a dicot seed (Pea, gram or red kidney bean)

Structure of CBSE Science Sample Paper for Class 10 is

Type of Question Marks per Question Total No. of Questions Total Marks
Objective Type Questions 1 20 20
Short Answer Type Questions 3 10 30
Long Answer Type Questions 6 5 30
Total 36 80

PRESCRIBED BOOKS:

  • Science-Textbook for class IX-NCERT Publication
  • Science-Text book for class X- NCERT Publication
  • Assessment of Practical Skills in Science-Class IX - CBSE Publication
  • Assessment of Practical Skills in Science- Class X- CBSE Publication
  • Laboratory Manual-Science-Class IX, NCERT Publication
  • Laboratory Manual-Science-Class X, NCERT Publication
  • Exemplar Problems Class IX – NCERT Publication
  • Exemplar Problems Class X – NCERT Publication

For Preparation of exams students can also check out other resource material

CBSE Class 10 Science Sample Papers

CBSE Class 10 Science Worksheets

CBSE Class 10 Science Question Papers

CBSE Class 10 Science Test Papers

CBSE Class 10 Science Revision Notes

Importance of Question Bank for Exam Preparation?

There are many ways to ascertain whether a student has understood the important points and topics of a particular chapter and is he or she well prepared for exams and tests of that particular chapter. Apart from reference books and notes, Question Banks are very effective study materials for exam preparation. When a student tries to attempt and solve all the important questions of any particular subject , it becomes very easy to gauge how much well the topics have been understood and what kind of questions are asked in exams related to that chapter.. Some of the other advantaging factors of Question Banks are as follows

  1. Since Important questions included in question bank are collections of questions that were asked in previous exams and tests thus when a student tries to attempt them they get a complete idea about what type of questions are usually asked and whether they have learned the topics well enough. This gives them an edge to prepare well for the exam.Students get the clear idea whether the questions framed from any particular chapter are mostly either short or long answer type questions or multiple choice based and also marks weightage of any particular chapter in final exams.
  2. CBSE Question Banks are great tools to help in analysis for Exams. As it has a collection of important questions that were asked previously in exams thereby it covers every question from most of the important topics. Thus solving questions from the question bank helps students in analysing their preparation levels for the exam. However the practice should be done in a way that first the set of questions on any particular chapter are solved and then solutions should be consulted to get an analysis of their strong and weak points. This ensures that they are more clear about what to answer and what can be avoided on the day of the exam.
  3. Solving a lot of different types of important questions gives students a clear idea of what are the main important topics of any particular chapter that needs to focussed on from examination perspective and should be emphasised on for revision before attempting the final paper. So attempting most frequently asked questions and important questions helps students to prepare well for almost everything in that subject.
  4. Although students cover up all the chapters included in the course syllabus by the end of the session, sometimes revision becomes a time consuming and difficult process. Thus, practicing important questions from Question Bank allows students to check the preparation status of each and every small topic in a chapter. Doing that ensures quick and easy insight into all the important questions and topics in each and every individual. Solving the important questions also acts as the revision process.
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