Solved PYQs 1-12 of 933: IITJAM (IIT Joint Admission Test) Chemistry | PYQ 2023
Video Course 2026 (242 Lectures- 219 hrs): Offline Support
Welcome back! Your subscription is active. Please access it from list of lectures.%
Study Material (249 Notes): 2026-2027 Syllabus
Welcome back! Your subscription is active. Please access it from list of detailed notes%
933 PYQs (283 Numerics) with Explanations (2026-2027 Exam)
Welcome back! Your subscription is active. Please access it from questions with explanations%
Help me ChooseAlready Subscribed?
Question 1 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
In the Born-Haber cycle, the heat of formation of CuCl is _ kJ/mol.
[Given: Heat of atomization of Cu =+ 338 kJ/mol, Ionization energy of Cu =+ 746 kJ/mol, Heat of atomization of Cl2 =+ 121 kJ/mol, Electron affinity of Cl =- 349 kJ/mol and Lattice energy of CuCl =-973 kJ/mol]
(round off to the nearest integer)
Inorganic ChemistryChemical Bonding and Shapes of MoleculesBorn-Haber Cycle
Question 2 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The spin-only magnetic moment of B2 molecule is _ µB
(round off to two decimal places)
Inorganic ChemistryMain Group Elements (S and P Blocks)Combined Ideas from Topics
Question 3 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The sum of the total number of stereoisomers (including enantiomers) present in the following molecules is
Organic ChemistryBasic Concepts in Organic Chemistry and StereochemistryOptical Isomerism with and Without Any Stereocenters
Question 4 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The number of singlets observed in the ′H NMR spectrum of P is
Organic ChemistryQualitative Organic AnalysisIR and 1H NMR for Structural Elucidation of Simple Organic Molecules
Question 5 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
When a glass capillary tube is dipped in water, a 1.0 cm rise in the water level is observed at 18 °C. The internal radius of the capillary is _cm.
Given: Surface tension of water at 18 °C = 73.2 dyne cm-1; difference in the densities of water and air at 18° C = 0.996 gcm-3 gravitational acceleration constant, g = 980 cm s-2.
Assume that water completely wets the glass capillary and the interface between the water and the air phase inside the capillary is a hemisphere
(round off to two decimal places)
Physical ChemistryLiquid StateSurface Tension and Co-Efficient of Viscosity and Their Applications
Question 6 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The volume of 2.0 mol of an ideal gas is reduced to half isothermally at 300 K in a closed system. The value of ΔG is _kJ.
[Given: R = 8.314 Jmol-1 K-1]
(round off to two decimal places)
Physical ChemistryChemical ThermodynamicsThermodynamic Functions: Gibbs Free Energy
Question 7 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The harmonic vibrational frequency of a diatomic molecule is 2000 cm-1. Its zero-point energy is _eV.
[Given: Planck՚s constant = 6.62 × 10-34 J s; 1 eV = 1.6 × 10-19 J]
(round off to two decimal places)
Physical ChemistrySpectroscopyRotational, Vibrational, Electronic and Magnetic Resonance Spectroscopy (Basics)
Question 8 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
An elementary reaction 2 A ⇾ P follows a second order rate law with rate constant 2.5 × 10-3 dm3mol-1s-1. The time required for the concentration of A to change from 0.4 mol dm-3 to 0.2 mol dm-3 is _s.
(round off to the nearest integer)
Physical ChemistryChemical KineticsDifferential and Integrated Form of Rate Expressions
Question 9 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The following diagram shows the kinetic energy of the ejected photoelectrons against the energy of incident radiation for two metal surfaces M1 and M2. If the energy of the incident radiation on M1 is equal to the work function of M2, the de Broglie wavelength of the ejected photoelectron is _nm.
[Given: Mass of electron = 9.11 × 10-31 kg; Planck՚s constant = 6.62 × 10-34 J s; 1 eV = 1.6 × 10-19 J.]
(round off to two decimal places)
Physical ChemistryAtomic and Molecular StructurePhotoelectric Effect
Question 10 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The spin-only magnetic moment of [Fe (acac)3] is _µB
(round off to two decimal places)
Question 11 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
The amount of ethane produced in the following reaction is _kg.
(round off to two decimal places)
Inorganic ChemistryTransition Metals (D Block)Homogenous Catalysis Involving Wilkinson's Catalyst
Question 12 | PYQ 2023Numeric: This question requires a numeric answer – enter a number or decimal using the buttons below.
In a gravimetric estimation of Al, a sample of 0.1000 g AlCl3 is precipitated with 8-hydroxyquinoline. The weight of the precipitate is _g.
[Given: atomic weight of Al is 26.98; molecular weight of AlCl3 is 133.34; and molecular weight of 8-hydroxyquinoline is 145.16]
(round off to 4 decimal places)
Inorganic ChemistryAnalytical ChemistryUse of Organic Reagents in Inorganic Analysis