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National Testing Agency (NTA) conducts Joint Entrance Examination, JEE (Main), for admission to undergraduate engineering programs at NITs, IIITs, other Centrally Funded Technical Institutions (CFTI), institutions funded by participating State Governments, and other Institutions.

JEE (Main) is also an eligibility test for the JEE (Advanced), which you have to take if you are aspiring for admission to the undergraduate programs offered by the IITs.

The JEE (Main) is conducted twice before admissions in the next academic session. This gives you one more opportunity to improve your score if you fail to give your best in the first attempt without wasting the whole academic year. The best of the two NTA scores is considered for preparation of Merit List and Ranking.

Latest Updates

Group 13 Elements

February 06, 2023

Boron, Aluminium, Gallium, Indium and belong to IIIA group of the Periodic table. The general outer electronic configuration of IIIA group elements is ns2np1.

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Alkaline Earth Metals

February 03, 2023

Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium (Ra) are IIA elements. The oxides of these elements (CaO (Lime), SrO (strontia), BaO (Baryta)) are thermally very stable and basic in nature & hence, they are called alkaline earths.

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Alkali Metals

January 25, 2023

Li, Na, K, Rb, Cs and Fr belongs to IA group. Oxides of Li, Na, K, Rb and Cs dissolve in water giving strong alkalies. So, these elements are known as alkali metals.

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Hydrogen and Compounds

January 22, 2023

Hydrogen is the most abundant element in the universe. It is the 9th most abundant element in the earth's crust. It occurs only in the combined state except in volcanic gases where it occurs in free state.

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September 27, 2022

Generally, metals occur as compounds in the earth crust. The compounds of metals which occur in earth crust, along with the earthy impurities associated with them, are called minerals.

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Periodicity in Properties

September 21, 2022

Repetition of properties after intervals of atomic number values 2, 8, 18 and 32 is called periodicity. The properties are called periodic properties.

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Classification of Elements

September 15, 2022

To simplify the study of chemistry of elements and their compounds, systematic classification is necessary. The first attempt was made by Dobereiner.

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Surface Chemistry

September 09, 2022

Adsorption: The phenomenon in which the molecules of a substance are attracted and adhered to the surface of a solid or liquid. Adsorption is a surface phenomenon. Adsorption is a exothermic reaction. Released heat is called Heat of adsorption.

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Chemical Kinetics

September 03, 2022

The study of rates of chemical reactions mechanisms and factors affecting rates of reactions is called chemical kinetics.

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August 22, 2022

Electrochemistry deals with chemical changes involving electricity. Some chemical reactions require electric current and some chemical reactions produce electric current.

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Chemical Equilibrium

August 16, 2022

Based on the direction of their occurrence, chemical reactions are two types.

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Chemical Solutions

August 10, 2022

A solution is a homogeneous mixture of two or more substances at molecular or ionic levels. Components of true solution can not be separated by filtration, settling, centrifugation.

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Chemical Bonding

July 28, 2022

The force of attraction between atoms or ions is called chemical bond. Formation of chemical bonds involved electrons and nuclei and mainly energy changes. Bond formation is exothermic and bond breaking is endothermic.

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Atomic Structure

July 22, 2022

According to Dalton, atom is the smallest indivisible particle. But discharge tube experiments have proved that atom consists of some more smaller particles. Electrons, protons and neutrons are the fundamental particles of an atom.

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Solid State

July 16, 2022

Solids are characterized by their high density and low compressibility as compared to those of the gases. The properties of solids indicate that the molecule (or ions) in them are relatively close together.

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Wave Motion

July 11, 2022

Sound is a form of energy produced by a vibrating body, which requires medium to travel. Sound travels in the form of waves. The audible sound has frequency range 20 Hz to 20 kHz.

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Simple Harmonic Motion (SHM)

July 04, 2022

The motion that repeats itself after regular intervals of time is called periodic motion. If a particle in the periodic motion moves to and fro over the same path, the motion is said to be vibrating or oscillating.

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June 27, 2022

Thermodynamics is the subject dealing with quantitative relation between heat energy and other forms of energy in physico-chemical processes. These results are formulated in to four laws - zero, first, second and third laws of thermodynamics.

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