NCERT Exemplar Book Class 10 Science Free PDF Download - Learn CBSE

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Movement of various types can be taken as an indication of life. The maintenance of life requires processes like nutrition, respiration, transport of materials within the body and excretion of waste products.

Autotrophic nutrition involves the intake of simple Class 10th Ncert Exemplar Science Form inorganic materials from the environment and using Class 10th Science Chapter 3 Ncert Solutions And an external energy source like the Sun to synthesise complex high-energy organic material.

Heterotrophic nutrition involves the intake of complex material prepared by other organisms. In human beings, the food eaten is broken down by various steps along the alimentary canal Class 10th Ncert Exemplar Science Form and the digested food is absorbed in the small intestine to be Class 10th Ncert Exemplar Science Form sent to all cells in the body.

During the process of respiration, complex organic compounds such as glucose are broken down to provide energy in the form of ATP. ATP is used to provide energy for other Class 10th Ncert Exemplar Science Form Class 10th Ncert Exemplar Science Form reactions in the cell. Respiration may be aerobic or anaerobic. Aerobic respiration makes more energy available to the organism. In human beings, the transport of materials such as oxygen, carbon dioxide, food and excretory products is a function of the circulatory system.

The circulatory system consists of the heart, blood and blood vessels. In highly differentiated plants, transport of water, minerals, food and other materials is a function of the vascular tissue which consists of xylem and phloem. In human beings, excretory products in Class 10th Ncert Exemplar Science Form Ncert Class Form Exemplar 10th Science Form 10th Science Exemplar Class Ncert the form of soluble nitrogen compounds are removed by the nephrons in the kidneys. Plants use a variety of techniques to get rid of waste material.

For example, waste material may be stored in the cell-vacuoles Class 10th Ncert Exemplar Science Form Exemplar Ncert Science Class Form 10th or as gum and resin, removed in the falling leaves, or excreted into the surrounding soil. Control and coordination are the functions of the nervous system and hormones in our bodies. The responses of the nervous system can be classified as reflex action, voluntary action or involuntary action.Class 10th Ncert Exemplar Science Form

The nervous system uses electrical impulses to transmit messages. The nervous system Class 10th Ncert Exemplar Science Form gets information from our sense organs and acts through our muscles. Chemical Class 10th Ncert Exemplar Science Form coordination is seen in both plants and animals. Hormones produced in one part of an organism move to another part to achieve the desired effect. A feedback mechanism regulates the action of the hormones. A stream of electrons moving through a conductor constitutes an electric current.

Conventionally, the direction of current is taken opposite to the direction of flow of electrons. The SI unit of electric current is ampere. To set the electrons in motion in an electric circuit, we use a cell or a Class 10th Ncert Exemplar Science Form battery.

A cell generates a potential difference across its terminals. It is Class 10th Ncert Exemplar Science Form measured in volts V. Resistance is a property that resists the flow Class 10th Ncert Exemplar Science Form of electrons in a conductor. It controls the magnitude of the current. The resistance of a conductor depends directly on its length, inversely on its area of cross-section, and also on the material of the conductor.Class 10th Ncert Exemplar Science Form

The equivalent resistance of several resistors in series is equal to the Class 10th Ncert Exemplar Science Form sum of their individual resistances. One watt of power is consumed when Class 10th Ncert Exemplar Science Form 1 A of current flows at a potential difference of 1 V. The commercial unit of electrical energy is kilowatt hour kWh. A compass needle is a small magnet. Its one end, which points towards north, Class 10th Ncert Exemplar Science Form is called a north pole, and the other end, which points towards south, is called a south pole.

A magnetic field exists in the region surrounding a magnet, in which the force of the magnet can be detected. Field lines are used to represent a magnetic field. A field line is the path along which a hypothetical free north pole would Class 10th Ncert Exemplar Science Form tend to move. The direction of the magnetic field at a point Ncert Form Science 10th Exemplar Class is given by the direction that a north pole placed at that Class 10th Ncert Exemplar Science Form point would take. Field lines are shown closer together where the magnetic field is greater.

A metallic wire carrying an electric current has associated with it a magnetic field. The field lines about the wire consist Class 10th Ncert Exemplar Science Form Class 10th Ncert Exemplar Science Form of a series of concentric circles whose direction is given by the right-hand rule. The pattern of the magnetic field around a conductor due to an electric current flowing through it depends on the shape of Class 10th Ncert Exemplar Science Form the conductor. The magnetic field of a solenoid carrying a current is Class 10th Ncert Exemplar Science Form similar to that of a bar magnet.

An electromagnet consists of a core of soft iron wrapped around with a coil of insulated copper wire. A current-carrying conductor when placed in a magnetic field experiences a force. This is the basis of an electric motor. An electric motor Class 10th Ncert Exemplar Science Form is a device that converts electric energy into mechanical energy. The phenomenon of electromagnetic induction is the production of induced current in a coil placed in a region where the magnetic field changes with time.

The magnetic field may change due to a relative motion between the coil and a magnet placed near to the coil. If the coil is Class 10th Ncert Exemplar Science Form placed near to a current-carrying conductor, the magnetic field may change either due to a change in the current through the conductor or due to the relative motion between the coil and conductor. A generator converts mechanical Class 10th Ncert Exemplar Science Form energy into electrical energy. It works on the basis of electromagnetic induction.

In our houses we receive AC electric power of V with a Class 10th Ncert Exemplar Science Form frequency of 50 Hz. One of the wires in this supply is Class 10th Ncert Exemplar Science Form with red insulation, called live wire. The other one is of black Class 10th Ncert Exemplar Science Form Class 10th Ncert Exemplar Science Form Class 10th Ncert Exemplar Science Form insulation, which is a neutral wire. The potential difference between the two is V. The third is the earth wire that has green insulation Class 10th Ncert Exemplar Science Form Class 10th Ncert Exemplar Science Form and this is connected to a metallic body deep inside earth.

It Class 10th Ncert Exemplar Science Form is used as a safety measure to ensure that any leakage of current to a metallic body does not give any severe shock to Science Exemplar Class Ncert 10th Form a user. Now, if you are searching for comprehensive, precise and free solutions for Class 10 Science NCERT Exemplar problems, then you have reached Exemplar Science Class Form 10th Ncert the right page.

Here, all the questions are provided with easy and logical explanations so as to help students get a deep understanding of the problems based on different concepts and they become efficient in obtaining correct solutions. Part 1. Part 2. Part 3. NCERT Exemplars are basically practice-books that include high-level questions that are meant for in-depth learning and 10th Form Science Ncert Exemplar Class improving the problem solving skills among students.

So, it is quite beneficial for students to thoroughly practice the NCERT Exemplar problems and learning to arrive at correct solutions. Jagranjosh Education Awards Click here if you missed it!

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