CBSE Brings About a Change in the Passing Criteria for Class 10th

Keeping in view the extreme pressure and stress that the little minds undergo during the board examinations, the Central Board of Secondary Education (CBSE) has decided to extend the passing criteria for class 10 students. Earlier, the students required a minimum of 33% marks in theory and practical separately to clear the exam. As per the new change the students will be required to score a minimum of 33% marks in theory and practical combined to be declared as pass in a certain subject. Indeed this new measure will be extremely beneficial for the students. As per speculations the CBSE will implement this change from the coming board exams 2019. As per the schedule the CBSE will conduct the class 10 and 12 board exams in February for the academic year 2019. The list of vocational subjects scheduled to be conducted this year has already been released by the CBSE. The details syllabus for science for class 10th exams is as follows:

1. Acids, bases and salts: General properties, examples and uses:

Types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralisation, oxidation and reduction in terms of gain and loss of oxygen and hydrogen.

A brief discussion of basic metallurgical processes. Properties of common metals. Elementary idea about bonding.

Carbon compounds, the elementary idea about bonding. Saturated hydrocarbons, alcohols, carboxylic acids: (no preparation, only properties).

2. Soap – cleansing action of soap:

Gradations in properties: Mendeleev periodic table.

3. The World of the Living:

Our Environment: Environmental problems, what can we do? Biodegradable, nonbiodegradable. Ozone depletion.

Define ‘living’ things; Basic concept of nutrition, respiration, transport and excretion in plants and animals.

Tropic movements in plants; Introduction to plant hormones; Control and coordination in animals: voluntary, involuntary and reflex action, nervous system; chemical coordination: animal hormones.

Reproduction in plants and animals. Need for and methods of family planning. Safe sex vs. HIV/ AIDS.

Childbearing and women’s health.

Heredity; Origin of life: brief introduction; Basic concepts of evolution.

4. Moving Things, People and Ideas

5. How things work

Potential difference, potential

Ohm’s law

Series combination of resistances

Parallel combination of resistances.

Power dissipated due to current. Inter relation between P, V, I and R.

Magnetic field Field lines

Field due to a current carrying wire. Field due to current carrying coil or solenoid.

Force on current carrying conductor Fleming’s left hand rule.

Electric motor

Electromagnetic induction.

Induced potential differences, induced current.

Electric generator. principle and working.

Direct current

Alternating current; frequency of AC. Advantage of AC over DC.

Domestic electric circuits.

6. Natural Phenomena:

Convergence and divergence of light.

Images formed by a concave mirror; related concepts centre of curvature, principal axis. Optical centre, focus, focal length.

Refraction; laws of refraction.

Images formed by a convex lens; functioning of lens in human eye; problems of vision and remedies.

Application of spherical mirrors and lenses.

Appreciation of concept of refraction; velocity of light; refractive index; twinkling of stars; dispersion of light.

Dispersion of light.

Scattering of light.

7. Natural Resources:

Management of natural resources. Conservation and judicious use of natural resources. Forest and wildlife, coal and petroleum conservation.

People’s participation. Chipko movement. Legal perspectives in conservation and international scenario.

Big dams: advantages and limitations; alternatives if any. Water harvesting. Sustainability of natural resources.

Different forms of energy, leading to different sources for human use: fossil fuels, solar energy; biogas; wind, water and tidal energy; nuclear energy. Renewable versus non-renewable sources.

 

By: Anuja Arora

Content: https://indianexpress.com/article/education/cbse-class-10-exams-2019-here-is-the-detail-syllabus-of-science-5418190/