Tuesday, April 26, 2022

Plant growth and Development | Class 11 | Previous Years Questions and Answers (Web and PDF))

 PLANT GROWTH AND DEVELOPMENT

Respiration in Plants | Class 11 | Previous Years Questions and Answers (Web and PDF))

 RESPIRATION IN PLANTS

Photosynthesis | Class 11 | Previous Years Questions and Answers (Web and PDF))

 PHOTOSYNTHESIS

Mineral nutrition | Class 11 | Previous Years Questions and Answers (Web and PDF)

 MINERAL NUTRITION

Transport in plants | Class 11 | Previous Years Questions and Answers (Web and PDF)

 TRANSPORT IN PLANTS

Cell cycle and cell division | Class 11 | Previous Years Questions and Answers (Web and PDF)

 CELL CYCLE AND CELL DIVISION

Cell: The unit of Life | Class 11 | Previous Years Questions and Answers (Web and PDF)

 CELL-THE UNIT OF LIFE

Anatomy of Flowering Plants | Class 11 | Previous Years Questions and Answers (Web and PDF)

 ANATOMY OF FLOWERING PLANTS

Friday, April 22, 2022

Neural Control and coordination | Class 11 | Previous Years Questions and Answers (2015 to 2020)

 NEURAL CONTROL & COORDINATION

Chemical coordination and Integration | Class 11 | Previous Years Questions and Answers (2015 to 2020)

 CHEMICAL COORDINATION AND INTEGRATION

Thursday, April 14, 2022

Plus 2 Biology Question Paper 2022 March PDF with Answer key

👉 DOWNLOAD QUESTION PAPER PDF

ANSWER KEY - BOTANY

Sunday, March 20, 2022

13. Magnetic Effects of Electric Current | Class 10 CBSE | Web Notes | Part 7: Domestic Electric Circuits

MAGNETIC EFFECTS OF ELECTRIC CURRENT


DOMESTIC ELECTRIC CIRCUITS


In homes, electric power is supplied through a main supply (mains), supported through overhead electric poles or by underground cables. In this, one wire is with red insulation cover (live wire or positive) and other wire is with black insulation (neutral wire or negative). In our country, the potential difference between the two is 220 V.

13. Magnetic Effects of Electric Current | Class 10 CBSE | Web Notes | Part 6: Electric Generator

MAGNETIC EFFECTS OF ELECTRIC CURRENT


ELECTRIC GENERATOR


The principle of electromagnetic induction can be applied to produce large currents for use in homes and industry.

13. Magnetic Effects of Electric Current | Class 10 CBSE | Web Notes | Part 5: Electromagnetic Induction

MAGNETIC EFFECTS OF ELECTRIC CURRENT


ELECTROMAGNETIC INDUCTION


Consider a conductor is moving inside a magnetic field or a magnetic field is changing around a fixed conductor. This was first studied by English experimental physicist Michael Faraday (1831). He discovered how a moving magnet can be used to generate electric currents. This effect can be observed by the following activity.

13. Magnetic Effects of Electric Current | Class 10 CBSE | Web Notes | Part 4: Electric Motor

MAGNETIC EFFECTS OF ELECTRIC CURRENT


ELECTRIC MOTOR


It is a rotating device that converts electrical energy to mechanical energy.

13. Magnetic Effects of Electric Current | Class 10 CBSE | Web Notes | Part 3: Force on a Current-Carrying Conductor in a Magnetic Field

MAGNETIC EFFECTS OF ELECTRIC CURRENT



FORCE ON A CURRENT-CARRYING CONDUCTOR IN A MAGNETIC FIELD


An electric current through a conductor produces a magnetic field. This field exerts a force on a magnet placed near the conductor.

13. Magnetic Effects of Electric Current | Class 10 CBSE | Web Notes | Part 2: Magnetic Field due to a Current-Carrying Conductor

MAGNETIC EFFECTS OF ELECTRIC CURRENT


MAGNETIC FIELD DUE TO A CURRENT-CARRYING CONDUCTOR


Experiment to find the direction of the field:

13. Magnetic Effects of Electric Current | Class 10 CBSE | Web Notes | Part 1: Magnetic Field & Field Lines

MAGNETIC EFFECTS OF ELECTRIC CURRENT


Electricity and Magnetism are linked to each other. It can be shown by the following experiment.

Wednesday, March 2, 2022

12. Electricity | Class 10 CBSE | Web Notes | Part 6: Heating Effect of Electric Current, Electric Power

ELECTRICITY


HEATING EFFECT OF ELECTRIC CURRENT


A battery or a cell is a source of electrical energy. It generates potential difference that sets the electrons in motion to flow the current through a resistor or a system of resistors.

12. Electricity | Class 10 CBSE | Web Notes | Part 5: Resistance of a System of Resistors

ELECTRICITY


RESISTANCE OF A SYSTEM OF RESISTORS


In electrical gadgets, resistors are used in various combinations based on Ohm’s law.

12. Electricity | Class 10 CBSE | Web Notes | Part 4: Factors on which the Resistance of a Conductor Depends

ELECTRICITY


FACTORS ON WHICH THE RESISTANCE OF A CONDUCTOR DEPENDS


Note the ammeter reading in an electric circuit with

12. Electricity | Class 10 CBSE | Web Notes | Part 3: Ohm's Law

ELECTRICITY



OHM’S LAW


Set up a circuit consisting of a nichrome wire XY (0.5 m length), an ammeter, a voltmeter and four cells of 1.5 V each. (Nichrome = an alloy of Ni, Cr, Mn & Fe.)

12. Electricity | Class 10 CBSE | Web Notes | Part 2: Electric Potential, Potential Difference, Circuit diagrams

ELECTRICITY


ELECTRIC POTENTIAL AND POTENTIAL DIFFERENCE


Electric charges do not flow in a metallic conductor (e.g. copper wire) by themselves. Here, gravity has no role.

12. Electricity | Class 10 CBSE | Web Notes | Part 1: Electric Current and Circuit

ELECTRICITY


ELECTRIC CURRENT AND CIRCUIT


Flow of electric charges through a conductor (e.g., metallic wire) is called an electric current.

Wednesday, February 16, 2022

11. The Human Eye and the Colourful World | Class 10 CBSE | Web Notes | Part 6: Scattering of Light

THE HUMAN EYE AND THE COLOURFUL WORLD

SCATTERING OF LIGHT


The path of a beam of light passing through a true solution is not visible. But it is visible through a colloidal solution due to scattering of light.

11. The Human Eye and the Colourful World | Class 10 CBSE | Web Notes | Part 5: Atmospheric Refraction

THE HUMAN EYE AND THE COLOURFUL WORLD


ATMOSPHERIC REFRACTION


If an object is observed through hot air above a fire or radiator, it shows random wavering or flickering.

11. The Human Eye and the Colourful World | Class 10 CBSE | Web Notes | Part 4: Dispersion of White Light by a Glass Prism

THE HUMAN EYE AND THE COLOURFUL WORLD


DISPERSION OF WHITE LIGHT BY A GLASS PRISM


When sunlight passes through a small hole, it gives a narrow beam of white light.

11. The Human Eye and the Colourful World | Class 10 CBSE | Web Notes | Part 3: Refraction of Light through a Prism

THE HUMAN EYE AND THE COLOURFUL WORLD


REFRACTION OF LIGHT THROUGH A PRISM


A triangular glass prism has two triangular bases and three rectangular lateral surfaces. These surfaces are inclined to each other. The angle between its two lateral faces is called the angle of the prism.

11. The Human Eye and the Colourful World | Class 10 CBSE | Web Notes | Part 2: Defects of Vision and their Correction

THE HUMAN EYE AND THE COLOURFUL WORLD


DEFECTS OF VISION AND THEIR CORRECTION


Defects of vision (refractive defects) are caused due to gradual loss of power of accommodation.

11. The Human Eye and the Colourful World | Class 10 CBSE | Web Notes | Part 1: The Human Eye

THE HUMAN EYE AND THE COLOURFUL WORLD


THE HUMAN EYE


The eyeball is nearly spherical with a diameter of 2.3 cm.

Sunday, February 13, 2022

14. Sources of Energy | Class 10 CBSE | Web Notes | Part 4: Environmental Consequences

SOURCES OF ENERGY


ENVIRONMENTAL CONSEQUENCES


Exploiting sources of energy disturbs the environment.

14. Sources of Energy | Class 10 CBSE | Web Notes | Part 3: Non-Conventional sources of energy

SOURCES OF ENERGY

ALTERNATIVE OR NON-CONVENTIONAL SOURCES OF ENERGY


Solar Energy

14. Sources of Energy | Class 10 CBSE | Web Notes | Part 2: Conventional sources of energy

SOURCES OF ENERGY


CONVENTIONAL (TRADITIONAL) SOURCES OF ENERGY

Fossil Fuels

14. Sources of Energy | Class 10 CBSE | Web Notes | Part 1: Introduction, What is a good source of energy?

SOURCES OF ENERGY

In a physical or chemical process, total energy is conserved.

Sunday, January 23, 2022

Sustainable Management of Natural Resources | Class 10 CBSE | PDF slides full

SUSTAINABLE MANAGEMENT OF NATURAL RESOURCES: 

PDF SLIDE PRESENTATION



Our Environment | Class 10 CBSE | PDF slides full

OUR ENVIRONMENT: 

PDF SLIDE PRESENTATION



Sources of Energy | Class 10 CBSE | PDF slides full

SOURCES OF ENERGY: 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2



Magnetic Effects of Electric Current | Class 10 CBSE | PDF slides full

MAGNETIC EFFECTS OF ELECTRIC CURRENT: 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2



Electricity | Class 10 CBSE | PDF slides full

ELECTRICITY: 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2



The Human Eye and the Colourful World | Class 10 CBSE | PDF slides full

THE HUMAN EYE AND THE COLOURFUL WORLD: 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2



Heredity and Evolution | Class 10 CBSE | PDF slides full

HEREDITY AND EVOLUTION: 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2



Light – Reflection and Refraction | Class 10 CBSE | PDF slides full

LIGHT-REFLECTION AND REFRACTION: 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2



How do Organisms Reproduce? | Class 10 CBSE | PDF slides full

HOW DO ORGANISMS REPRODUCE? 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2



Control and Coordination | Class 10 CBSE | PDF slides full

CONTROL AND COORDINATION: 

PDF SLIDE PRESENTATION



Life Processes | Class 10 CBSE | PDF slides full

LIFE PROCESSES: 

PDF SLIDE PRESENTATION

👉 PART 1

👉 PART 2