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Physical Chemistry
Some Basic Concepts of Chemistry
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Atomic Structure
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Redox Reaction
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Gaseous State
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Chemical Equilibrium
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Liquid Solution
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Ionic Equilibrium
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Thermodynamics
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Chemical Kinetics
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Radioactivity and Nuclear Chemistry
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Electrochemistry
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Solid State
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Surface Chemistry
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Inorganic Chemistry
Periodic Table
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Chemical Bonding
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Metallurgy
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Hydrogen and It's Compounds
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Some s Block Elements
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Some P Block Elements
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d and f Block Elements
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Coordination Compounds
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Organic Chemistry
IUPAC Nomenclatures
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General Organic Chemistry
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Isomerism
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Hydrocarbons
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Halogen Derivatives
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Alcohol and Ether
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Aldehyde and Ketone
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Aromatic Chemistry
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Carbonyl Compounds
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Carboxylic Acids and Amines
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Polymers
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Biomolecules
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Practical Chemistry
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Chemistry In Everyday Life
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1
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
How and why does the density of liquid water change on prolonged electrolysis?
A
Decreases, as the proportion of H2O increases
B
Remains unchanged
C
Increases, as the proportion of D2O increases
D
Increases, as the volume decreases
2
WB JEE 2016
MCQ (Single Correct Answer)
+1
-0.25
Which statement is not correct for ortho and para hydrogen?
A
They have different boiling points
B
Ortho-form is more stable than para-form
C
They differ in their nucleus spin
D
The ratio of ortho to para hydrogen changes with change in temperature
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WB JEE 2025 (1) WB JEE 2022 (2) WB JEE 2020 (1) WB JEE 2016 (1)
WB JEE Subjects
Physics
Mechanics
Units & MeasurementsVector AlgebraMotionLaws of MotionCircular MotionWork Power & EnergyCenter of MassRotational MotionProperties of MatterHeat and ThermodynamicsSimple Harmonic MotionWavesGravitation
Electricity
ElectrostaticsCurrent ElectricityCapacitorMagnetismElectromagnetic InductionAlternating CurrentElectromagnetic Waves
Optics
Geometrical OpticsWave Optics
Modern Physics
Atoms and NucleiDual Nature of RadiationElectronic Devices
Chemistry
Physical Chemistry
Some Basic Concepts of ChemistryAtomic StructureRedox ReactionGaseous StateChemical EquilibriumLiquid SolutionIonic EquilibriumThermodynamicsChemical KineticsRadioactivity and Nuclear ChemistryElectrochemistrySolid StateSurface Chemistry
Inorganic Chemistry
Periodic TableChemical BondingMetallurgyHydrogen and It's CompoundsSome s Block ElementsSome P Block Elementsd and f Block ElementsCoordination Compounds
Organic Chemistry
IUPAC NomenclaturesGeneral Organic ChemistryIsomerismHydrocarbonsHalogen DerivativesAlcohol and EtherAldehyde and KetoneAromatic ChemistryCarbonyl CompoundsCarboxylic Acids and AminesPolymersBiomoleculesPractical ChemistryChemistry In Everyday Life
Mathematics
Algebra
Sets and RelationsLogarithmsSequence and SeriesQuadratic EquationsPermutations and CombinationsMathematical Induction and Binomial TheoremMathematical InductionBinomial TheoremMatrices and DeterminantsVector AlgebraThree Dimensional GeometryProbabilityComplex NumbersStatistics
Trigonometry
Trigonometric Functions & EquationsInverse Trigonometric FunctionsProperties of Triangle
Coordinate Geometry
Straight Lines and Pair of Straight LinesCircleParabolaEllipseHyperbola
Calculus
FunctionsLimits, Continuity and DifferentiabilityDifferentiationApplication of DerivativesIndefinite IntegralsDefinite IntegrationApplication of IntegrationDifferential Equations