CBSE Class 10 Science Sample Papers & Important Questions

If you are looking for Class 10 Science model papers, periodic test papers, Important Questions, MCQ Questions, Sample Papers, Study Notes, Hot Questions, Worksheets, Class Assignments, Practice Exercises, Word Problems, Previous Year question papers, Solved papers, Unit tests and other related study material for exam preparation then you are at the right place.

Total Papers : 165

Total Papers : 165

Worksheets of Class 10

CBSE Worksheets for Class 10 Science contains all the important questions on Science as per NCERT syllabus. These Worksheets for Class 10 Science or 10th grade Science worksheets help students to practice, improve knowledge as they are an effective tool in understanding the subject in totality. Also Multiple Choice Questions based Worksheets help students in learning in depth concepts while out of the class.

Worksheets of Class 10 Science

Question bank of Class 10

On Ribblu one can get immense collections of CBSE Question Bank for Class 10 Science which includes important questions 10th Class Chapter wise as per NCERT syllabus. Students while preparing for final exams must practice all the important questions of 10th grade Science. All these Important Questions chapter wise have been uploaded by various registered users.

Question bank of Class 10 Science

Sample Papers of Class 10

By Solving CBSE Sample Papers for Class 10 Science, immensely helps students in preparing for the final exams. These Class 10 sample papers and 10th grade sample question papers are prepared in accordance with the latest syllabus and guidelines that are issued by the central board. If one wants to have a clear idea of how the final exam papers would be in terms of level of difficulty, time and other aspects then, all students must make sure that they do sample papers once their course revision is finished.

Sample Papers of Class 10 Science

Revision Notes of Class 10

CBSE Revision Notes For Class 10 Science are very important for quick revision to recall all that has been learned throughout the year. On Ribblu.com one can find Study Key Notes or Revision notes for all subjects of 10th Class STD and which includes Science as per CBSE and NCERT syllabus. Notes make this process of recall easy. One can easily revise the precise notes in a day or two. Once they get the hint, the students are quick to recall the entire material.

Revision Notes of Class 10 Science

Question Papers of Class 10

If you are looking for CBSE Question Papers for Class 10 Science then you are at the right place. On Ribblu you will find Class 10 Science Question Papers, 10th class previous year board question papers and MCQs Paper for Class 10 Science, as per NCERT Syllabus. Solving them gives students the clear idea of how the final exam papers would be in terms of level of difficulty, time and other aspects, so all students must attempt as many Science Question Papers as possible once their course revision is finished so as to get the best score in final exams

Question Papers of Class 10 Science

Test Papers of Class 10

CBSE Test Papers from Class 10 Science are very important for exam preparations. Students need to practice these practice test papers of class 10th and periodic and assessment unit tests of grade 10th while preparing for final exams. Practicing these Test Papers will enable students to identify important topics of chapters for preparing final exams. As per CBSE Guidelines schools need to conduct weekly tests and periodic tests. So these Previous Class Test papers, periodic and Unit Test Papers of Science gives students the clear idea of what are the important aspects in a particular topic and thereby increase their fundamental concepts and knowledge and prepare them for Final Exams.

Test Papers of Class 10 Science

Supplementary Helping Aids For CBSE Exams Preparation.

Indian Education system primarily consists of two parts one being studying the subjects and the other one is appearing for exams and tests. All these exams are conducted by schools for various classes to gauge how much the students have understood , learned and what is their capability score in any particular subject. But sometimes even after understanding the topics fully there are chances the students don’t do well in exams because of lack of preparation from the examination perspective. The reason being that one needs to prepare for exams in a particular way and for that previous question papers, sample papers, worksheets and unit test papers play a major role.

The important factors in performing well in the exams, apart from, studying day & night, grasping everything and retaining everything, is, to be able to study smart and in a proper disciplined manner, so that all the efforts translate into performance.

When preparing for your exams every expert recommends that students should invest more time and effort into solving question papers and worksheets from previous year

This practice not only will familiarise the students with the format of the question paper, it will also teach them the discipline of answering the entire question paper within the time allotted to you at the examination. The more one solves these, the more confidence will be gained towards achievement of highest score. Often it happens that in the exams the children know the solution of every question but due to lack of time they miss some portions. So it is imperative to practice before hand so that everything is attempted on time in main exams

Class 10 Science Term Wise Syllabus

Term I

Unit —I Chemical Substances — Nature and Behavior (25 Marks)

Chapter-1: Chemical reactions and Equations

Chemical equation, Balanced chemical equation, implications of a balanced chemical equation, Types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction.

The process in which new substances with new properties are formed from one or more substances is called Chemical Reaction.

  • The substances which take part in chemical reaction are called Reactants.
  • The substances which are formed in a chemical reaction are called Products.
  • Chemical reaction involves:
    • Change in state
    • Change in color
    • Change in temperature
    • Evolution of gas

Chemical Equation

  • A chemical reaction can be represented by chemical equation. It involves uses of symbol of elements or chemical formula of reactant and product with mention of physical state.
  • The necessary conditions such as temperature, pressure or any catalyst should be written on arrow between reactant and products.

Balancing Chemical Equation

  • Law of conservation of Mass: Matter can neither be created nor destroyed in a chemical reaction.
  • So number of elements involved in chemical reaction should remain same at reactant and product side.

Types of Chemical Reactions

Combination Reaction: The reaction in which two or more reactant combine to form a single product.

Decomposition Reaction: The reaction in which a compound splits into two or more simple substances is called decomposition reaction.

Displacement Reaction: The chemical reaction in which more reactive element displaces less reactive element from its salt solution.

Double Displacement Reaction: A reaction in which new compounds are formed by mutual exchange of ions between two compounds.

Oxidation And Reduction:

Oxidation: The addition of oxygen to reactant.

Reduction: The addition of hydrogen to reactant.

Chapter-2: Acids, Bases and Salts

Their definitions in terms of furnishing of H+ and OH- ions, General properties (physical and chemical properties), examples and uses, 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.

ACIDS :

  • These are the substances which have sour taste.
  • They turn blue litmus solution red.
  • They give H+ ions in aqueous solution.

BASES :

  • These are the substances which are bitter in taste and soapy in touch.
  • They turn red litmus solution blue.
  • They give OH− ions in aqueous solution.

SALTS :

  • These are the compounds formed from reaction of acid and base.

Unit V: Natural Resources (7 Marks)

Chapter-14: Sources of energy

Anything in the environment ‘which can be used’ is called natural resource. For example, soil, air, water, forests, wildlife, coal and petroleum. Different forms of energy, conventional and non-conventional sources of energy: Fossil fuels, solar energy; biogas; wind, water and tidal energy; Nuclear energy. Renewable versus non-renewable sources of energy.

Unit II: World of Living (23 Marks)

Chapter-6: 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; Basic concepts of evolution

All living things perform certain life processes like growth, excretion, respiration, circulation etc. All the processes like respiration, digestion, which together keep the living organisms alive and perform the job of body maintenance are called life processes.

Suggestive Practical: Preparing a temporary mount of a leaf peel to show stomata. (S.no.6 as per the List of Experiments from CBSE.)

Suggestive Practical: Experimentally show that carbon dioxide is given out during respiration. (S.no. 7 as per the List of Experiments from CBSE.)

Chapter-7: 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.

Control and Coordination in Animals It is brought about in all animals with the help of two main systems: (a) Nervous system (b) Endocrine system

Coordination in Plants

Movements in plants :

  1. Independent of growth
  2. Dependent on growth

Independent of growth : Immediate response to stimulus.

  • Plants use electrical-chemical means to convey information from cell to cell.
  • For movement to happen, cells change their shape by changing the amount of water in them, resulting in swelling or shrinking of cells.

Dependent on growth : These movements are tropic movements i.e., directional movements in response to stimulus.

Unit V: Natural Resources (7 Marks)

Chapter-15: Our Environment

Eco-system, Environmental problems, Ozone depletion, waste production and their solutions, Biodegradable and non-biodegradable substances. Everything that surrounds us is environment. It includes both living (biotic) and non-living (abiotic) components. Interaction between these biotic and abiotic components form an ecosystem. In an ecosystem living components depend on each other for their food which give rise to food chains and food webs in nature. Human activities lead to environmental problems such as depletion of ozone layer and production of huge amount of garbage.

Unit IV: Effects of Current (13 Marks)

Chapter-12: Current Electricity

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.

Suggestive Practical: 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. (S.no. 4 as per the List of Experiments from CBSE.)

Suggestive Practical: Determination of the equivalent resistance of two resistors when connected in series and parallel.

(S.no. 5 as per the List of Experiments from CBSE.)

Chapter-13: 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, electric motor, electromagnetic induction, Induced potential difference, Induced current. Fleming's Right Hand Rule, Electric generator, Direct current, Alternating current, frequency of AC, Advantage of AC over DC, Domestic electric circuits

Term II (Revision of syllabus for Mid —Term Examination)

Unit I: Chemical Substances - Nature and Behavior

Chapter-4: Carbon and its compounds

Covalent bonding in carbon compounds, Versatile nature of carbon, Homologous series, Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes, alkenes and alkynes), difference between saturated hydrocarbons 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.

Suggestive Practical: Study of the following properties of acetic acid (Ethanoic acid):

  1. odour
  2. solubility in water
  3. effect on litmus
  4. reaction with Sodium hydrogen carbonate (S.no.8 as per the List of Experiments from CBSE.)

Suggestive Practical: Study of the comparative cleaning capacity of a sample of soap in soft and hard water. (S.no.9 as per the List of Experiments from CBSE.)

Chapter-5: Periodic classification of elements

Need for classification, Early attempts at classification of elements (Dobereiner’s Triads, Newland’s Law of Octaves, Mendeleev’s Periodic table), Modern periodic table, gradation in properties, valency, atomic number, metallic and non-metallic properties.

Unit III: Natural Phenomenon (12 Marks)

Chapter-10: Light- Reflection and Refraction

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, applications of spherical mirrors, Refraction: laws of refraction, refractive index, Refraction of light by spherical lens, Image formed by spherical lenses, Lens formula (Derivation not required), applications of lenses, Magnification. Power of a lens.

Suggestive Practical : Determination of the focal length of: i) Concave mirror ii) Convex lens

by obtaining the image of a distant object. (S.no.10 as per the List of Experiments from CBSE.)

Suggestive Practical : 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. (S.no.11 as per the List of Experiments from CBSE.)

Suggestive Practical: Finding the image distance for varying object distances in case of a convex lens and drawing corresponding ray diagrams to show the nature of image formed.

(S.no.13 as per the List of Experiments from CBSE.)

Chapter-11: The Human Eye and the Colorful World

Functioning of a lens in human eye, defects of vision and their corrections, Refraction of light through a prism, dispersion of light, scattering of light and its applications in daily life.

Unit V: Natural Resources

Chapter-16: Management of natural resources

Conservation and judicious use of natural resources, Forest and wild life, Coal and Petroleum conservation, Examples of people’s participation for conservation of natural resources, Big dams: advantages and limitations, alternatives, if any. Water harvesting, Sustainability of natural resources.

Management of Natural Resources : It is the use of natural resources in such a way so as to avoid wastage and conserve them for future. There are national and international laws and acts to protect the environment.

Reuse is better than recycling as it saves energy.

We need to use our resources carefully because

  • they are limited.
  • demand for all resources is increasing as human population is increasing at a tremendous rate due to improvement in health care.

Sustainable Management

Management of resource wisely so that they meet current basic human needs while preserving them for the needs of future generations.

The management of natural resources require :

  • Long term perspective so that these will last for generations to come.
  • Ensure equitable distribution of resources so that all economic sections benefit from these resources.
  • Safe disposal of waste.

Forest and Wildlife Conservation

Forest are biodiversity hot spots. Main aim of conservation is to preserve the biodiversity as loss of diversity may lead to ecological instability.

Biodiversity : Biodiversity of an area is the number of plant and animal species found in that particular area like bacteria, fungi, insects, birds, plants etc.

Hot spots : It means an area full of biological diversity.

Stake holder : A person having interest or concern for something is called stake holder.

Water for all

  • Water is the basic necessity for all terrestrial forms of life.
  • Rain is an important source of water.
  • Irrigation methods like dams, tanks and canals have been used in various parts of India.

Dams

Dams ensure the storage of adequate water for irrigation and are also used for generating electricity. Various dams have been built on rivers to regulate the flow of water

Advantages of Dams

  • Ensures adequate water for irrigation.
  • To generate electricity
  • Continuous supply of water to cities and towns.

Rain Water Harvesting : Rain water harvesting is to make rain water percolate under the ground so as to recharge ‘groundwater’

Unit II: World of Living

Chapter-8: 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.

Suggestive Practical: Studying (a) binary fission in Amoeba, and (b) budding in yeast and hydra with the help of prepared slides.

(S.no.12 as per the List of Experiments from CBSE.)

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

(S.no.15 as per the List of Experiments from CBSE.)

Chapter-9: Heredity and evolution

Heredity - Mendel's contribution- Laws of inheritance of traits, Sex determination: brief introduction, Basic concepts of evolution.

Suggested Science Question Paper Design - Class 10

Typology of Questions

Remembering: Exhibit memory of previously learned material by recalling facts, terms, basic concepts, and answers.

Number of Questions Asked that are Objective type Questions = 7

Number of Questions Asked that are Short Answer Type Questions = 2

Number of Questions Asked that are Long Answer Type Questions = 1

Total Weightage = 22.5%

Typology of Questions

Understanding: Demonstrate understanding of facts and ideas by organizing, comparing, translating, interpreting, giving descriptions, and stating main ideas

Number of Questions Asked that are Objective type Questions = 4

Number of Questions Asked that are Short Answer Type Questions = 2

Number of Questions Asked that are Long Answer Type Questions = 2

Total Weightage = 25%

Typology of Questions

Applying: Solve problems to new situations by applying acquired knowledge, facts, techniques and rules in a different way.

Number of Questions Asked that are Objective type Questions = 4

Number of Questions Asked that are Short Answer Type Questions = 1

Number of Questions Asked that are Long Answer Type Questions = 2

Total Weightage = 21.25%

Typology of Questions

Analyzing and Evaluating: Examine and break information into parts by identifying motives or causes. Make inferences and find evidence to support generalizations Present and defend opinions by making judgments about information, validity of ideas. or quality of work based on a set of criteria.

Number of Questions Asked that are Objective type Questions = 5

Number of Questions Asked that are Short Answer Type Questions = 2

Number of Questions Asked that are Long Answer Type Questions = 1

Total Weightage = 20%

Typology of Questions

Creating: Compile information together in a different way by combining elements in a new pattern or proposing alternative compulsory

Number of Questions Asked that are Objective type Questions = 0

Number of Questions Asked that are Short Answer Type Questions = 3

Number of Questions Asked that are Long Answer Type Questions = 0

Total Weightage = 11.25%

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