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Latest syllabus of science 2020-21 class X

May 21, 2020    No comments

SCIENCE  SYLLABUS (Code No. 086) 
Classes:  X (2020-21) 

General Instructions:
1. There will be an Annual Examination based on the entire syllabus.
2. The Annual Examination will be of 80 marks and 20 marks weightage shall be for Internal Assessment.
3. For Internal Assessment:
a. There will be Periodic Assessment that would include:
• For 5 marks- Three periodic tests conducted by the school. Average of the best two tests to be taken that will have a weightage of 05 marks towards the final result.
• For 5 marks- Diverse methods of assessment as per the need of the class dynamics and curriculum transaction. These may include - short tests, oral test, quiz, concept maps, projects, posters, presentations and enquiry based scientific investigations etc. and use rubrics for arguing them objectively. This will also have a weightage of 05 marks towards the final result.

b. Practical / Laboratory work should be done throughout the year and the student should maintain record of the same. Practical Assessment should be continuous. There will be weightage of 5 marks towards the final result. All practicals listed in the syllabus must be completed.
c. Portfolio to be prepared by the student- This would include classwork and other sample of student work and will carry a weightage of 5 marks towards the final results.





Theme: Materials (55 Periods)

 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, neutralization, oxidation and reduction.
Acids, bases and salts: Their definitions in terms of furnishing of H+ and OH– ions, General 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.
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.
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.

Theme: The World of the Living                                                                                    (50Periods) 
 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 healthneed 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.

Theme: Natural Phenomena (23 Periods) 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.

Theme: How Things Work (32 Periods) 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, 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.

 Theme: Natural Resources (20 Periods) Unit V: Natural Resources
Sources of energy: 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.
Our environment: Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Biodegradable and non-biodegradable substances.
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.
 
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:          Unit-I
(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:  Unit-I a) Litmus solution (Blue/Red)
b) Zinc metal
c) Solid sodium carbonate
2. Performing and observing the following reactions and classifying them into:                   Unit-I
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:           Unit-I 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.           Unit-IV
5. Determination of the equivalent resistance of two resistors when connected in series and
parallel.                                                                                                                           Unit-IV
6. Preparing a temporary mount of a leaf peel to show stomata.                                       Unit- II
7. Experimentally show that carbon dioxide is given out during respiration.                       Unit-II
8. Study of the following properties of acetic acid (ethanoic acid):                                          Unit- I  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.      Unit- I
10. Determination of the focal length of:                                                                                   Unit-III 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.                                                                                                            Unit - III
12. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of
prepared slides.                                                                                                                   Unit-II
13. Tracing the path of the rays of light through a glass prism.            Unit-III
14. 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.                                     Unit-III 15. Identification of the different parts of an embryo of a dicot seed (Pea, gram or red kidney bean).
Unit-II
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


Note: 
• Typology of Questions: VSA including objective type questions, Assertion – Reasoning type questions; SA; LA; Source-based/ Case-based/ Passage-based/ Integrated assessment questions. • An internal choice of approximately 33% would be provided.

Internal Assessment (20 Marks)
• Periodic Assessment - 05 marks + 05 marks
• Subject Enrichment (Practical Work) - 05 marks
• Portfolio - 05 marks
____________________________________________________________________________
Suggestive verbs for various competencies
• Demonstrate Knowledge and Understanding
State, name, list, identify, define, suggest, describe, outline, summarize, etc.
• Application of Knowledge/Concepts
Calculate, illustrate, show, adapt, explain, distinguish, etc.
• Analyze, Evaluate and Create
Interpret, analyze, compare, contrast, examine, evaluate, discuss, construct, etc.




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CORONA VIRUS AWARENESS INFORMATION

March 19, 2020    1 comment

CORONA VIRUS OR COVID-19
Mydreamclasses
BACKGROUND 
Ever since the novel coronavirus or COVID-19 was first reported from China's Wuhan city, the virus has spread to more than 127countries and territories around the world with 1,87,689 confirmed cases and 7,494 deaths so far, according to Center for Systems Science and Engineering (CSSE) W.H.O. has declared the virus as a global pandemic.
According to Ministry of health and family welfare
Total number of Active COVID 2019 cases across India : 171
Total number of Deaths due to COVID 2019 across India : 4

The Ministry of Health has developed the following do’s and don’ts to educate the public on how to avoid contracting the disease. 
WHAT IS CORONAVIRUS DISEASE (COVID-19)? 
This is a highly infectious disease caused by the new Coronavirus (COVID-19). It is spread from person-to-person through sneezing, or coughing (droplets infection), human to human contact and contact with contaminated surfaces. 
SIGNS AND SYMPTOMS OF COVID-19 
• Fever           • Cough • Sore throat                • Difficulty in breathing 
• Other flu like symptoms like running nose, sneezing and body weakness.
 WHAT MUST BE DONE TO PROTECT ONE’S SELF (THINGS TO DO)
  • Wash your hands frequently with soap and water or, use an alcohol-based hand rub.
  • This will remove the virus if it is on your hands. 
  • Cover your mouth and nose with tissue or a handkerchief when coughing and sneezing. 
  • Throw away the used tissue immediately and wash your hands with soap and water or use an alcohol-based hand rub. 
  • The handkerchief must be washed by yourself daily and ironed with a hot iron. In this way, you protect others from any virus released through coughs and sneezes. 
  • Maintain reasonable distance between yourself and someone who is coughing, sneezing (at least 1 meter apart). Avoid touching your eyes, nose and mouth. 
  • Hands touch many surfaces which can be contaminated with the virus and you can transfer the virus from the surface to yourself. If you have fever, cough and difficulty in breathing, seek medical care immediately.
  •  If possible, call a health worker and alert them about your condition. Always follow the guidance of your health care worker. 
  • People with flu-like symptoms should use face masks to cover the nose and mouth and stay home in a well-ventilated room. 
WHAT MUST NOT BE DONE
  •  AVOID HAND-SHAKING AND HUGGING AT ALL TIMES. 
  • Avoid close contact with people who are visibly sick with flu-like symptoms (fever, cough, sneeze). 
  • When sick with flu-like symptoms avoid going to public places, offices and public gatherings. Remain at home to avoid infecting others. 
  • You do not need to wear medical masks if you do not have respiratory symptoms such as cough, sneezing or running nose. 
  • Don’t take self-medication such as antibiotics. 
  • Do NOT spit in public. Find a secluded place like toilets or pit latrines in which to spit.
  •  Delay travel to countries that currently have many patients with Coronavirus disease. 
  • If you MUST travel, please follow the above protective measures.
  •  Avoid travel if you have flu-like symptoms. 1. 2. 3. 4. 5. 6

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MUST READ NEW CHANGES IN SYLLABUS FOR CLASS-12 STUDENTS SESSION 2019-20

September 15, 2019    1 comment

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