TG Inter 1st Year Chemistry Exam 2026 LIVE: Important Questions; Short Notes & Formulas

TG Inter 1st Year Chemistry Exam 2026 LIVE

• Mar 11, 2026 12:45 PM IST

  Expected 2 marks questions for Chemistry TG Inter 1st Year 2026 (1)

  States of Matter & Thermodynamics

  1. Boltzmann’s Constant: What is Boltzmann’s constant (k_B)? Give its value. (k_B = 1.38\10{-23}\{ J/K})

  2. RMS Speed vs. Average Speed: Give the ratio of RMS speed, average speed, and most probable speed of gas molecules. (1.224:1.128:1)

  3. Graham’s Law (Application): Which of the gases diffuses faster among N_2, O_2, and CH_4? Why? (Answer: CH_4, because it has the lowest molar mass).​​​​​

• Mar 11, 2026 12:30 PM IST

  Expected 4 marks questions for Chemistry TG Inter 1st Year 2026 (5)

  9. Ion-Electron Method (Redox Balancing)

  Balance a redox reaction in either an acidic or basic medium. A classic example is:

  MnO_4- + Fe{2+} -Mn{2+} + Fe{3+} (in acidic medium)

  10. Empirical and Molecular Formula Calculation

  Practice calculating the Empirical Formula and Molecular Formula when given the percentage composition and molar mass of a compound (e.g., a compound with C, H, and Cl).

• Mar 11, 2026 12:15 PM IST

  Expected 4 marks questions for Chemistry TG Inter 1st Year 2026 (4)

  7. Conjugate Acid-Base Pairs

  Define a Conjugate Acid-Base pair according to the Bronsted-Lowry theory. Give two examples (like HCl/Cl- or NH_3/NH_4+) and explain how they differ by only one proton (H+).

  8. Structure of Diborane (B_2H_6)

  Explain the structure of Diborane. Mention the 3-centre-2-electron bonds (Banana bonds), the terminal B-H bonds, and the hybridisation of Boron (sp3).

• Mar 11, 2026 12:00 PM IST

  Expected 4 marks questions for Chemistry TG Inter 1st Year 2026 (3)

  5. Hess’s Law of Constant Heat Summation

  State Hess’s Law from the Thermodynamics chapter. Provide an example (like the formation of CO_2 in one step vs. two steps) to illustrate that the total enthalpy change remains the same regardless of the path.

  6. Le Chatelier’s Principle (Ammonia Synthesis)

  Explain Le Chatelier's Principle. Apply it to the industrial synthesis of Ammonia by Haber’s Process (N_2 + 3H_2 - 2NH_3). Mention the optimum conditions of temperature (725{ K}), pressure (200), and the catalyst used.

• Mar 11, 2026 11:45 AM IST

  Expected 4 marks questions for Chemistry TG Inter 1st Year 2026 (2)

  3. Graham’s Law of Diffusion

  State Graham’s Law. Explain its applications (like the separation of isotopes or detecting gas leaks) and solve a simple numerical problem comparing the rates of two gases like CH_4 and SO_2.

  4. Hydrogen Bonding

  Define Hydrogen Bonding. Explain the two types—Intermolecular (e.g., H_2O, NH_3) and Intramolecular (e.g., o-nitrophenol)—and discuss their effect on the physical properties of substances.

• Mar 11, 2026 11:30 AM IST

  Expected 4 marks questions for Chemistry TG Inter 1st Year 2026 (1)

  1. Hybridisation of PCl_5 and SF_6

  Explain the hybridisation involved in PCl_5 (sp3d) and SF_6 (sp3d2). Be sure to draw the geometry (Trigonal bipyramidal for PCl_5 and Octahedral for SF_6) and mention the bond angles.

  2. Dalton’s Law of Partial Pressures

  State Dalton’s Law and derive its relationship with the mole fraction of a gas (P_i = X_i \cdot P). This is a frequent visitor from the States of Matter chapter.

• Mar 11, 2026 11:15 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (9)

  10. Stoichiometry & Redox (Combined)

  • (a) Define Empirical Formula and Molecular Formula. A compound contains 4.07% hydrogen, 24.27% carbon, and 71.65% chlorine. Its molar mass is 98.96 g. Find its molecular formula.

  • (b) Balance the following redox reaction by the Ion-Electron Method in an acidic medium:

    MnO_4- + Fe{2+} - Mn{2+} + Fe{3+}

• Mar 11, 2026 11:00 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (8)

  9. Organic Chemistry: Alkyne Preparations

  Describe two methods for the preparation of Acetylene (C_2H_2). Explain its reaction with:

  • Water in the presence of H_2SO_4/HgSO_4

  • Ozone (Ozonolysis)

  • Bromine (Br_2/CCl_4)

  • Ammoniacal AgNO_3 (Tollen’s reagent)

• Mar 11, 2026 10:45 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (7)

  7. Periodic Property Variations (Extended)

  Explain what a periodic property is. Discuss the variation of the following properties in a Group and a Period:

  • Metallic Character

  • Nature of Oxides

  • Electron Gain Enthalpy

  • Electronegativity

   

  8. Kinetic Molecular Theory of Gases

  State the Postulates of Kinetic Molecular Theory of Gases. How does this theory explain the gas laws (Boyle’s Law and Charles’s Law)?

• Mar 11, 2026 10:30 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (6)

  6. Molecular Orbital Theory (MOT)

  Describe the main features of Molecular Orbital Theory. Draw the Molecular Orbital Energy Level Diagrams for:

  • N_2 (Nitrogen)

  • O_2 (Oxygen)

    Calculate their Bond Order and explain their Magnetic Nature (Paramagnetic vs. Diamagnetic).

• Mar 11, 2026 10:15 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (5)

  5. Hybridisation (s and p Orbitals)

  What is Hybridisation? Explain the following types with one example each:

  • sp hybridization (BeCl_2 or C_2H_2)

  • sp2 hybridization (BF_3 or C_2H_4)

  • sp3 hybridization (CH_4)

• Mar 11, 2026 10:00 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (4)

  4. VSEPR Theory & Shapes

  Explain VSEPR (Valence Shell Electron Pair Repulsion) Theory. Predict the shapes and bond angles of the following molecules based on this theory:

  • BeCl_2 (Linear)

  • BF_3 (Trigonal Planar)

  • CH_4 (Tetrahedral)

  • NH_3 (Pyramidal)

  • H_2O (Bent/V-shape)​​​​​​​​​​​​​​​​​​​​​

• Mar 11, 2026 09:45 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (3)

  3. Organic Chemistry (Hydrocarbons)

  • Benzene: Describe any two methods of preparation for Benzene. Explain the following chemical properties with equations:

    • Halogenation

    • Nitration

    • Sulphonation

    • Friedel-Crafts Alkylation & Acylation

  • Acetylene/Ethylene: Describe two methods of preparation for Acetylene (or Ethylene). Explain its reactions with:

    • Water (H_2O) in the presence of Hg{2+}/H+

    • Ozone (O_3) — Ozonolysis

    • Hydrogen Halides (HX)

• Mar 11, 2026 09:30 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (2)

  2. Classification of Elements

  • Ionization Enthalpy ($IE$): Define IE_1 and IE_2. Why is IE_2 always greater than IE_1? Discuss the factors (like atomic radius, nuclear charge, screening effect) that influence Ionization Enthalpy.

  • Periodic Property Trends: Define periodic property. Explain how the following properties vary in a group and a period:

    • Atomic Radius

    • Electron Gain Enthalpy

    • Electronegativity

  • s, p, d, f Block Elements: Write an essay on the classification of elements into s, p, d, and f blocks based on their electronic configurations.

• Mar 11, 2026 09:15 AM IST

  Expected 8 marks questions for Chemistry TG Inter 1st Year 2026 (1)

  1. Atomic Structure

  • Bohr’s Model of Hydrogen Atom: Write the postulates of Bohr’s theory. Explain how this model accounts for the various series of lines in the hydrogen spectrum (Lyman, Balmer, Paschen, etc.).

  • Quantum Numbers: Explain the significance of the four quantum numbers (n, l, m_l, and s) and how they are used to describe an electron in an atom.

   

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• Mar 11, 2026 09:00 AM IST

  Chapter-wise Weightage for TG Inter 1st Year Chemistry Exam 2026 (3)

  The detailed chapter-wise blueprint is provided here as per the official marks distribution: 

  Chapter Name	VSAQ (2M)	SAQ (4M)	LAQ (8M)	Total Marks
  s-Block Elements	2	-	-	4
  p-Block Elements (Group 13)	1	-	-	2
  p-Block Elements (Group 14)	1	-	-	2
  Environmental Chemistry	2	-	-	4
  Organic Chemistry (Hydrocarbons)	-	1	1	12

• Mar 11, 2026 08:45 AM IST

  Chapter-wise Weightage for TG Inter 1st Year Chemistry Exam 2026 (2)

  The detailed chapter-wise blueprint is provided here as per the official marks distribution: 

  Chapter Name	VSAQ (2M)	SAQ (4M)	LAQ (8M)	Total Marks
  Stoichiometry	1	1	-	6
  Thermodynamics	1	1	-	6
  Chemical Equilibrium & Acids-Bases	1	1	-	6
  Hydrogen & its Compounds	1	1	-	6

• Mar 11, 2026 08:30 AM IST

  Chapter-wise Weightage for TG Inter 1st Year Chemistry Exam 2026 (1)

  The detailed chapter-wise blueprint is provided here as per the official marks distribution: 

  Chapter Name	VSAQ (2M)	SAQ (4M)	LAQ (8M)	Total Marks
  Atomic Structure	-	-	1	8
  Classification of Elements	-	-	1	8
  Chemical Bonding	-	2	-	8
  States of Matter (Gases & Liquids)	1	1	-	6

• Mar 11, 2026 08:15 AM IST

  Preparation Strategy for TG Inter 1st Year Chemistry Exam 2026 (2)

  • Balance Equations: In the Stoichiometry and Redox Reactions chapters, practice balancing equations using the ion-electron method.

  • Previous Papers: Solve model papers from 2023, 2024, and 2025. Many questions, especially the 2-mark ones, are repeated.

  • Nodal Planes & Shapes: For the 2-mark and 4-mark sections, be ready to draw shapes of s, p, and d orbitals.

• Mar 11, 2026 08:00 AM IST

  Preparation Strategy for TG Inter 1st Year Chemistry Exam 2026 (1)

  • Master the Textbooks: Stick strictly to the Telangana SCERT/Telugu Academy textbook, as 100% of questions are derived from it.

  • Practice 8-Mark Questions: There are only about 5-6 standard 8-mark questions (Bohr's model, Periodic properties, Organic preparations). Master these first to secure 16 marks instantly.

• Mar 11, 2026 07:45 AM IST

  TG Inter 1st Year Chemistry Exam 2026: High-Weightage Chapters (2)

  Organic Chemistry: Basic Principles & Hydrocarbons (8 Marks)

  This is a major section. Focus on Isomerism, IUPAC nomenclature, and the preparation of Benzene, Ethylene, and Acetylene.

  Chemical Bonding (4-8 Marks)

  Key topics: VSEPR Theory, Hybridisation, and Molecular Orbital Theory (MOT).

• Mar 11, 2026 07:30 AM IST

  TG Inter 1st Year Chemistry Exam 2026: High-Weightage Chapters (1)

  Atomic Structure (8 Marks)

  Expect a Long Answer Question (LAQ) on Bohr’s Model of Hydrogen Atom or Quantum Numbers.

  Classification of Elements & Periodicity (8 Marks)

  Focus on the Modern Periodic Table and periodic properties like Ionization Enthalpy, Electronegativity, and Atomic Radii.

• Mar 11, 2026 07:15 AM IST

  TG Inter 1st Year Chemistry Exam 2026: Exam Pattern & Marks Distribution

  The Chemistry paper is for 60 marks (total 100, with 30 marks for practicals and 10 internal/ethics). The theory paper consists of three sections:

  Section	Question Type	No. of Questions	Marks per question	Total
  Section A	Very Short Answer (VSA)	10 (No Choice)	2	20
  Section B	Short Answer (SA)	6 out of 8	4	24
  Section C	Long Answer (LA)	2 out of 3	8	16
  Total		18	60

• Mar 11, 2026 07:00 AM IST

  TG Inter 1st Year Chemistry Exam 2026 Tomorrow!

  The TSBIE has scheduled the TG Inter 1st Year Chemistry Exam 2026 to be held on March 12, 2026. Students appearing for the exam shall note the list of important topics and formulas here, along with important questions for reference. Prepare well for the exam to score good marks.