CUET PG Chemistry Exam 2026 March 11 LIVE: Last-minute Preparation Short Notes; Practice Questions & Important Topics

CUET PG Chemistry Exam 2026 March 11 LIVE

• Mar 11, 2026 12:00 PM IST

  CUET PG Chemistry Exam 2026: Reporting and Entry Protocol

  • Candidates should arrive at the exam centre at least 60 to 90 minutes before the gate closing time. Once the gate is closed, candidates will not be allowed to enter the exam hall.
  • Do not wear large metal buckles, thick-soled shoes, or clothes
  • No jewelry is allowed inside the exam hall
  • Do not bring any electronic gadgets

• Mar 11, 2026 11:00 AM IST

  CUET PG Chemistry Exam 2026: Exam Day Guidelines

  • Candidates should not forget to bring their CUET PG admit card to the exam hall
  • Along with the admit card, the candidates should bring their Aadhaar Card, PAN Card, Voter ID, or passport
  • Carry at least two passport-sized photographs (same pasted in the application form) on the attendance sheets
  • Black or blue ballpoint pen

• Mar 11, 2026 10:00 AM IST

  CUET PG Chemistry Exam 2026: Essential Data to Memorize

  • Bragg’s Law: 
  • Spin-only Magnetic Moment: 

• Mar 11, 2026 09:00 AM IST

  CUET PG Chemistry Exam 2026: Time Management Strategy

  Time Segment	Task	Goal
  0 to 30 minutes	The "Scan & Strike"	Finish all the Inorganic and theoretical Organic questions here Do not solve heavy mathematical calculations here
  30 to 80 minutes	The "Numerical Grind"	Solve Physical Chemistry and mechanism-based Organic questions
  80 to 90 minutes	The "Review & Guess"	Review marked questions If you are not sure, then do not answer the questions

   

• Mar 11, 2026 08:00 AM IST

  CUET PG Chemistry Exam 2026: Last Minute Preparation Tips (1/1)

  Usually, the candidates make mistakes while calculating the Physical Chemistry section; hence, they should keep in mind the following instructions:

  • Double-check the units in Electrochemistry and Thermodynamics.
  • Quickly review the t_1/2 relations for 1, 1st and 2nd order for Kinetics.
  • Revise the Langmuir Adsorption Isotherm graph and the difference between Physisorption and Chemisorption.

• Mar 11, 2026 07:00 AM IST

  CUET PG Chemistry Exam 2026: Toppers' tips to Follow (1/2)

  • For answering the Organic Chemistry questions, candidates should focus more on the Mechanism over the Memory Approach.
  • As per the toppers, candidates should solve the "one-liner" and theoretical questions (from Organic and Inorganic Chemistry) in the first 40 minutes
  • Solve the rest Physical Chemistry Numericals in 65 minutes.
  • To solve the "Match the Following" questions, the candidates should find one correct pair; usually, the 2 or 3 options will be eliminated immediately.
  • It is better to avoid blind guessing, since there is a 1 mark deduction for every incorrect answer. So it's better to skip the questions. 

• Mar 11, 2026 06:00 AM IST

  CUET PG Chemistry Exam 2026: Toppers' tips to Follow (1/1)

  • NTA usually mixes the units. Hence, always convert the SI units before plugging values into the Arrhenius Equation or Nernst Equation
  • Don't forget the first order Kinetics, that is . This is the common shortcut for CUET 
  • The candidates can save their crucial time during calculations if they memorize 

• Mar 11, 2026 05:00 AM IST

  CUET PG Chemistry Exam 2026: Practice Questions on Chemical Bonding (1/3)

  Ques. Which type of intermolecular force is primarily responsible for the high boiling point of water (H₂0) compared to H₂S?

  Answer. Hydrogen Bonding

  Ques. What is the hybridization and the formal charge on the central Oxygen atom in the Ozone (O₃) molecule?

  Answer. sp², +1

• Mar 11, 2026 04:00 AM IST

  CUET PG Chemistry Exam 2026: Practice Questions on Chemical Bonding (1/2)

  Ques. Using Fajan's rules, identify which of the following halides has the highest covalent character.

  Answer. AlCl₃

  Ques. What is the hybridization of the central Phosphorus atom in PCl₅ and its resulting molecular geometry?

  Answer. sp³d, Trigonal bipyramidal

  Ques. Which molecule possesses a non-zero dipole moment despite having polar bonds?

  Answer. NH₃

• Mar 11, 2026 03:00 AM IST

  CUET PG Chemistry Exam 2026: Practice Questions on Chemical Bonding (1)

  Ques. According to VSEPR theory, what is the geometry and the number of lone pairs on the central atom in the XeF₄ molecule?

  Answer. Square planar, 2 lone pairs

  Ques. Which of the following species is paramagnetic according to Molecular Orbital Theory?

  Answer. B₂

• Mar 11, 2026 02:00 AM IST

  The Periodic Trend Summary Table: Cheat Sheet for Quick Revision

  Property	Across a Period (----->)	Down a Group
  Atomic/Ionic Radius	Decreases	Increases
  Ionization Energy	Increases	Decreases
  Electron Affinity	More Negative	Less Negative
  Electronegativity	Increases	Decreases
  Metallic Character	Decreases	Increases

   

• Mar 11, 2026 01:00 AM IST

  Short notes on Periodicity of Elements for CUET PG Chemistry Exam 2026 (1/2)

  Atomic and Ionic Radii: 

  • Atomic Radius decreases across the period (due to the rise in Z_eff) and rises down a group (due to the new shells).
  • Ionic Radius: Anions are always greater than their parent atoms (0^2->0). Cations are always smaller than the parent atoms (Mg²⁺<Mg)
  • Isoelectronic Species: For the ions with a similar number of electrons, the radius decreases as the atomic number increases. 

• Mar 11, 2026 12:00 AM IST

  Short notes on Periodicity of Elements for CUET PG Chemistry Exam 2026 (1/1)

  • Effective Nuclear Charge and Shielding:
    • Slater's Rule: This rule is used for calculating the screening constant (σ); that is Z_eff= Z-σ
    • Trend: Z_eff rises across a period (leads to the smaller atoms) and remains constant down a group. 

• Mar 10, 2026 11:00 PM IST

  Periodicity of Elements Practice questions for CUET PG Chemistry Exam 2026 (1/3)

  Ques. Which of the following properties generally decreases across a period from left to right?

  Answer. Atomic Radius

  Ques. The electronegativity of elements on the Pauling scale is based on:

  Answer. Bond dissociation energies of molecules

• Mar 10, 2026 10:00 PM IST

  Periodicity of Elements Practice questions for CUET PG Chemistry Exam 2026 (1/2)

  Ques. Why is the electron gain enthalpy of Chlorine (Cl) more negative than that of Fluorine (F)?

  Answer. Chlorine has a larger atomic size.

  Ques. The diagonal relationship between Beryllium (Be) and Aluminum (Al) is due to their similar:

  Answer. Ionic radii and charge-to-size ratio

• Mar 10, 2026 09:00 PM IST

  Periodicity of Elements Practice questions for CUET PG Chemistry Exam 2026 (1/1)

  Ques. Which of the following elements has the highest first ionization energy?

  Answer. Nitrogen.

  Ques. Which factor is primarily responsible for the 'Lanthanide Contraction'?

  Answer. The poor shielding effect of 4 f electrons

   

• Mar 10, 2026 08:00 PM IST

  Atomic Structure Practice questions for CUET PG Chemistry Exam 2026 (1/2)

  Ques. What is the total number of nodes (radial + angular) for a 4d orbital?

  Answer. 3

  Ques. If the velocity of a particle is doubled and its mass is halved, how does its de Broglie wavelength (λ) change?

  Answer. It remains the same

• Mar 10, 2026 07:00 PM IST

  Atomic Structure Practice questions for CUET PG Chemistry Exam 2026 (1/1)

  Ques. For a hydrogen atom, which of the following expressions correctly represents the energy of an electron in the $n$-th orbit according to the Bohr model?

  Answer. E_n= -13.6/n² eV

  Ques. The number of radial nodes in a 3p orbital is:

  Answer: 1

• Mar 10, 2026 06:00 PM IST

  CUET PG Chemistry Exam 2026: Common Trap to Avoid in Electrochemistry Section

  The "Half-Cell" Trap:

  Noone should add E^o values for finding out the potential of a third half-reaction. Candidates must add the ΔG⁰ values. 

  • Correct: ΔG⁰₃= ΔG⁰₁+ΔG⁰₂
  • Incorrect: E⁰₃= E⁰₁+E⁰₂ (unless n is the same for all)

• Mar 10, 2026 05:00 PM IST

  3 One-Liners for Kinetics

  • Half-Life Ratio: For a first-order reaction, the time taken for 99.9% completion will be approximately 10 times the half-life (t_99.9% 10Xt_1/2)
  • Units of k: If the units of k are L²mol^-2s^-1, the reaction is third order
  • Activation Energy: If E_a=0, the rate constant k becomes equivalent to the pre-exponential factor A and is independent of temperature. 

• Mar 10, 2026 04:00 PM IST

  Numerical problem on The Reversible Intermediate (Lindemann Mechanism)

  This is a classic model for unimolecular reactions:

  Question: Derive the rate law for the formation of product P, assuming A* is at steady state.

   

• Mar 10, 2026 03:00 PM IST

  Numerical problem on "Steady State Approximation"

  Problem 1: The Multi-Step Mechanism

  Consider the following decomposition of a reactant A

  Question: If B is a highly reactive intermediate, what is the rate of formation of $C$ using the Steady State Approximation?

  Conclusion: The reaction is First Order with respect to A.

• Mar 10, 2026 02:00 PM IST

  CUET PG Chemistry Exam 2026: Exam Strategy for Chemical Kinetics

  1. Unit Watch: The units of k change with order.
     • Zero order: mol L^-1 s^-1
     • First order: s^-1
     • Second order: L mol^-1s^-1
  2. Graph Identification: A plot of log k vs 1/T is a straight line with slope - E_a/2.303 R

• Mar 10, 2026 01:00 PM IST

  Pro Guidance Tips on Chemical Kinetics: Rate Laws and Order of Reaction

  Zero Order: Rate is independent of concentration:

  • Integrated Rate Law: [A]= [A]₀-kt
  • Half-life: [A]₀/2k (Directly proportional to initial concentration).

  First-Order: Rate is proportional to concentration.

  • Integrated Rate Law: 
  • Half-life: 0.693/k (Independent of initial concentration)

  n-th Order Half-life: (Crucial for identifying order from data).

• Mar 10, 2026 12:00 PM IST

  "One-Liner" questions on Phase Equilibria (Clausius-Clapeyron equation) (1/2)

  Ques. For a two-component system at constant pressure, what is the 'Reduced' or 'Condensed' Phase Rule? Answer. F=C-P+1

  Ques. For a one-component system, what is the maximum number of phases that can coexist at equilibrium? Answer. 3

  Ques. Which assumption is made when deriving the Clausius-Clapeyron equation from the Clapeyron equation? Answer. The vapor behaves as an ideal gas, and its molar volume is much larger than the liquid's

  Ques. For the sublimation of iodine, which equation would you use to find the temperature dependence of its vapor pressure? Answer. Clausius- Clapeyron equation with ΔH_sub

   

• Mar 10, 2026 12:00 PM IST

  Numerical Problem on Thermodynamic Potentials & Maxwell Relations

  Ques. Which of the following is equivalent to (δG/ δP)_T?

  1. -S
  2. V
  3. T
  4. -P

  Answer. Option 2

• Mar 10, 2026 11:00 AM IST

  "One-Liner" questions on Phase Equilibria (Clausius-Clapeyron equation) (1/1)

  1. According to the Gibbs Phase Rule (F= C-P+2), what are the degrees of freedom for a system of pure water at its triple point? Ans. 0
  2. Which form of the Clausius-Clapeyron equation correctly relates the vapor pressure (P) to temperature (T)? Ans. 
  3. For the water system, why is the slope of the solid-liquid coexistence line (dP/dT) negative? Ans. The molar volume of ice is greater than that of liquid water
  4. At the critical point of a substance, which phenomenon is observed? Ans. The distinction between liquid and gas disappears

• Mar 10, 2026 10:00 AM IST

  Numerical Problem on Gibbs-Helmholtz and Spontaneity

  Problem Type: For a certain reaction, ΔH= -40kJmol-1 and ΔS= -100 JK-1 mol-1. At what temperature does the reaction become non-spontaneous?

  Expert Solution:

  • Identify the Equilibrium Point: A reaction changes spontaneity at ΔG=0
  • Set up the equation:
    • 0=ΔH - TΔS------> T= ΔH/ΔS
  • Check Units (The Trap): ΔH is in kJ, ΔS is in J. Convert ΔH to J. T= (-40000J)/(-100 JK^-1)= 400 K
  • Analyze the Trend: Since both ΔH and ΔS are negative, the reaction is spontaneous at low temperatures (T<400 K) and becomes non-spontaneous at T>400 K. 

• Mar 10, 2026 09:00 AM IST

  Numerical problems on Carnot Efficiency

  Problem Type: A Carnot engine operates between a source at 527 °C and a sink at 127 °C. If it absorbs 1000 J of heat from the source, how much work is done?

  Expert Solution:

  1. Convert to Kelvin (Mandatory):
     • T_hot= 527+273= 800 K
     • T_cold= 127+273= 400 K
  2. Calculate Efficiency= 1- T_cold/T_hot= 1- (400/800)= 0.5 (or 50%)
  3. Calculation of Work (W): 
     • Efficiency= W/q_in------> 0.5= W/1000
     • W= 500J

   

• Mar 10, 2026 08:45 AM IST

  CUET PG Chemistry Exam 2026: Expert Tips for Thermodynamics

  • State vs. Path Functions: Candidates should note it down that q and w are path functions; whereas U, H, S, G, and A are state functions.
  • Cyclic Process: For the cyclic process, the change in any state function is always zero.
  • Efficiency of Carnot Engine: n=1-T_cold/T_hot=w/q_hot. Temperatures must always be in Kelvin.

• Mar 10, 2026 08:30 AM IST

  CUET PG Chemistry Ionic Equilibria: Final Revision Checklist

  • Log Values: Memorize log 2(0.3), log 3 (0.48), and log 5 (0.7)
  • Alpha (α): Candidates should check if the approximation 1-α1 is valid (usually if K_a/C<10^-3)
  • Temperature Dependency: Keep in mind that K_w rises when the temperature rises, which means pH+pOH will be less than 14 at temperatures above 298 K.

• Mar 10, 2026 08:15 AM IST

  CUET PG Chemistry Ionic Equilibria: Indicators and Titration

  Particulars	Details
  Strong Acid vs. Strong Base	Any indicator (Phenolphthalein or Methyl Orange)
  Weak Acid vs. Strong Base	Phenolphthalein (Equivalence point pH>7)
  Strong Acid vs. Weak Base	Methyl Orange (Equivalence point pH<7)

   

• Mar 10, 2026 08:00 AM IST

  Salt Hydrolysis: The Shortcut Table

  Salt Type	Example	Nature
  SA+SB	NaCl	Neutral
  WA+SB	CH3COONa	Basic
  SA+WB	NH4Cl	Acidic
  WA+WB	CH3COONH4	Variable

   

• Mar 10, 2026 07:45 AM IST

  CUET PG Chemistry Ionic Equilibria: The "Dilution Trap" in pH Calculations

  • The Concept: The candidates cannot simply take -log(10^-8). They should account for the [H⁺] contributed by the auto-ionization of water (10^-7M)
  • The Math: Total [H⁺]= [H⁺]_acid+ [H⁺]_water
  • The Result: The pH of 10^-8 M HCl is approximately 6.98, not 8. An acidic solution would not be a basic pH.

• Mar 10, 2026 07:30 AM IST

  Quick list of "One-Liner" facts for Organometallic Chemistry (Inorganic) (1/4)

  18-Electron Calculation Tip: For the Neutral Atom Method, are highlighted in the following section-

  CO= 2 electrons

  n⁵-Cp= 5 electrons

  CH₃= 1 electron

  PPh₃= 2 electrons

• Mar 10, 2026 07:15 AM IST

  Quick list of "One-Liner" facts for Organometallic Chemistry (Inorganic) (1/3)

  • Reductive Elimination: This is the exact opposite of the oxidative addition, and this is the final step of many cycles (such as Monsanto Process), where the product is released.
  • Oxidative Addition: During this step of the catalytic cycle, both the formal oxidation state and the coordination number of the metal will be increased by two. 
  • Monsanto vs. Cativa Process: Both produce the Acetic Acid; nonetheless, Monsanto uses a Rhodium catalyst, while the Cativa process uses a more efficient Iridium catalyst.

• Mar 10, 2026 07:00 AM IST

  Quick list of "One-Liner" facts for Organometallic Chemistry (Inorganic) (1/2)

  • IR Stretching Frequency (v_CO): As π-backbonding rises, the M-C bond becomes stronger, but the CO bond becomes weaker, and decreases the IR stretching frequency. 
  • Wilkinson’s Catalyst: It is a 16-electron, square planar complex used for the hydrogenation of alkenes. The formula is represented as 
  • Zeise’s Salt: It was the first organometallic compound to involve an alkene ligand, and the formula is 

• Mar 10, 2026 06:45 AM IST

  Quick list of "One-Liner" facts for Organometallic Chemistry (Inorganic) (1/1)

  • The 18-Electron Rule: The most stable transition metal organometallic complexes, such as Metal Carbonyls, follow the 18-Electron rule. This is equivalent to the octet rule.
  • Synergic Bonding: In Metal Carbonyls, (M-CO), strength is gained by CO----->m σ- donation and m----->CO λ-backbonding. 

• Mar 10, 2026 06:30 AM IST

  CUET PG Chemistry Exam 2026: Emergency Revision Formula (1/3)

  • Particle in a 1D Box:  Note that energy is proportional to n² and inversely proportional to L². 
  • Bragg’s Law: nλ= 2dsinθ
  • Colligative Properties: 
    • Boiling point elevation: ΔT_b=iK_bm
    • Freezing point depression: ΔT_f=iK_fm

• Mar 10, 2026 06:15 AM IST

  CUET PG Chemistry Exam 2026: Emergency Revision Formula (1/2)

  Chemical Kinetics & Electrochemistry: 

  • Zero Order: 
  • First Order: 
  • Arrhenius Equation: .  A common question involves calculating E_a from two different temperatures.
  •  Nernst Equation: (at 298 K)
  • Kohlrausch’s Law: .  Very useful for calculating the molar conductivity of weak electrolytes at infinite dilution.

• Mar 10, 2026 06:00 AM IST

  CUET PG Chemistry Exam 2026: Emergency Revision Formula (1/1)

  Thermodynamics & Chemical Equilibrium:

  • First Law: ΔU= q+w (Remember: w= -PΔV for expansion)
  • Entropy (ΔS): Know the formula for phase changes, ΔS= q_rev/T, and for ideal gas expansion, ΔS= nRIn(V₂/V₁)+nC_vIn (T₂/T₁)
  • Gibbs Free Energy: ΔG= ΔH-TΔS [If ΔG<0, the reaction is spontaneous]
  • Van't Hoff Equation: In(K₂/K₁)= ΔH⁰/R (1/T₁-1/T₂). Use this for temperature dependence of equilibrium constants.

• Mar 10, 2026 05:45 AM IST

  CUET PG Chemistry Exam 2026: Constants to Remember

  For Energy/Work: R= 8.314 JK^-1mol^-1

  For Gas Laws/ Pressure: R= 0.0821 atm K^-1mol^-1

  Faraday’s Constant: F= 96500 C mol^-1

• Mar 10, 2026 05:30 AM IST

  CUET PG Chemistry Exam 2026: Expert Tip for Final Revision

  As per the recent paper pattern, the general section that is Part A was removed in the recent cycle, and the competition will be done solely on the Chemistry Knowledge. 

  • Candidates should be careful with the units in Physical Chemistry. A small mistake in converting R (Gas Constant) values will lead to choosing the incorrect option.
  • Solve previous years' papers: It is wise to solve the 2025 and 2024 question papers, since NTA sometrimes repeat the conceptual patterns. 

• Mar 10, 2026 05:15 AM IST

  What are the high yields Organic Chemistry Topics? (1/2)

  Chapter Names	High-Yields Topics
  Organic Spectroscopy	Structure elucidation using NMR (1H and 13C), IR and UV-Vis
  Natural Products & Biomolecules	SN1, SN2, E1, E2, and Electrophilic Aromatic Substitution (EAS)
  Functional Groups	Amino acids, peptides, proteins, and carbohydrates

• Mar 10, 2026 05:00 AM IST

  What are the high yields Organic Chemistry Topics? (1/1)

  Chapter Names	High-Yields Topics
  Stereochemistry	Chirality, R/S and E/Z nomenclature, and conformational analysis of cyclohexane (chair/boat forms)
  Reaction Mechanisms	SN1, SN2, E1, E2, and Electrophilic Aromatic Substitution (EAS)
  Named Reactions	Hemoglobin, myoglobin, and the Na/K pump

• Mar 10, 2026 04:45 AM IST

  What are the high yields Inorganic Chemistry Topics? (1/2)

  Chapter Names	High-Yields Topics
  Transition (d-block) & Inner Transition (f-block) Elements	Lanthanide contraction, magnetic properties, and color spectra
  Organometallic Compounds	18-electron rule, metal carbonyls, and hapticity
  Bioinorganic Chemistry	Hemoglobin, myoglobin, and the Na/K pump

• Mar 10, 2026 04:30 AM IST

  What are the high yields Inorganic Chemistry Topics? (1/1)

  Chapter Names	High-Yields Topics
  Coordination Chemistry	Crystal Field Theory (CFT), splitting in octahedral/tetrahedral complexes, CFSE, Jahn-Teller distortion, and isomerism
  Chemical Bonding	VSEPR theory, hybridization, and Molecular Orbital (MO) diagrams (especially for CO, NO, and O2).
  Main Group Elements (s and p block)	Borazines, silicates, phosphazenes, and noble gas compounds

• Mar 10, 2026 04:15 AM IST

  What are the high yields Physical Chemistry Topics? (1/2)

  Chapter Names	High-Yields Topics
  Electrochemistry	Nernst equation, Kohlrausch law, Debye-Hückel theory, and electrochemical cells
  Atomic Structure	Bohr’s model, quantum numbers, and radial/angular distribution curves
  Surface Chemistry & Phase Equilibria	Adsorption isotherms (Langmuir, BET) and Gibbs phase rule

• Mar 10, 2026 04:00 AM IST

  What are the high yields Physical Chemistry Topics? (1/1)

  The Physical Chemistry section contains 30% to 35% weightage of the paper, and this is the numerical and conceptual section. Check out the chapter-wise most important topics here:

  Chapter Names	High-Yields Topics
  Quantum Chemistry	Schrödinger equation, operators, particle in a box, hydrogen atom, and wave functions
  Thermodynamics	Laws of thermodynamics, Gibbs free energy, entropy, Maxwell relations, and spontaneity
  Chemical Kinetics	Rate laws, collision theory, Arrhenius equation, and steady-state approximation