Tamil Nadu Board - Class 8 previous year questions (PYQ)

2026 (1698 questions)

Q1.

In Chemistry, examine the topic of Type of chemical bond formed by complete transfer of electrons between atoms of high electronegativity difference. Which statement is scientifically accurate?

(A)

Hydrogen Bond

(B)

Electrovalent (Ionic) Bond

(C)

Coordinate (Dative) Bond

(D)

Covalent Bond

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

In Biological Sciences, identify the accurate description regarding Valve located between the left atrium and left ventricle of the human heart.

(A)

Aortic semilunar valve

(B)

Pulmonary semilunar valve

(C)

Bicuspid (Mitral) valve, preventing backflow of oxygenated blood during ventricular systole

(D)

Tricuspid valve

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2025 (345 questions)

Q1.

In English Language and Grammar, identify the grammatically correct sentence or rule regarding Subject-Verb Agreement with distributive pronouns ('neither of', 'either of').

(A)

Neither of the candidates are submitting the documentation.

(B)

Neither of the candidates have submitted the required documentation.

(C)

Neither of the candidates were submitted documentation.

(D)

Neither of the candidates has submitted the required documentation.

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

Solve the linear equation for $x$: $6x + 5 = 41$.

(A)

x = 7

(B)

x = 8

(C)

x = 5

(D)

x = 6

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2024 (648 questions)

Q1.

Algebraic Identities: What is the expanded algebraic identity for 'Measurements (Circle, Sector, Segment)'?

(A)

$(a+b)^3 = a^3 + 3a^2b + 3ab^2 + b^3$ or $a^3-b^3 = (a-b)(a^2+ab+b^2)$ (Measurements (Circle, Sector, Segment))

(B)

$a^3+b^3$ only

(C)

Cannot be factored

(D)

None of these

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

Algebraic Identities: What is the expanded algebraic identity for 'Measurements (Circle, Sector, Segment)'?

(A)

$(a+b)^3 = a^3 + 3a^2b + 3ab^2 + b^3$ or $a^3-b^3 = (a-b)(a^2+ab+b^2)$ (Measurements (Circle, Sector, Segment))

(B)

$a^3+b^3$ only

(C)

Cannot be factored

(D)

None of these

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2023 (652 questions)

Q1.

In Biological Sciences, identify the accurate description regarding Universal blood recipient group in the ABO blood typing system.

(A)

AB positive (AB+), because RBCs possess both A and B antigens and plasma lacks anti-A and anti-B antibodies

(B)

O negative (O-)

(C)

A positive (A+)

(D)

B positive (B+)

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

Regarding Tamil (தமிழ் - NMMS Eligible), which statement represents a core foundational principle of Role of fundamental duties in the constitutional civic framework?

(A)

Fostering civic consciousness, preserving national integrity, and protecting the environment

(B)

Granting absolute immunity from civil laws

(C)

Mandating foreign citizenship upon majority

(D)

Allowing tax evasion under certain conditions

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2022 (245 questions)

Q1.

Geometry & Mensuration: In a circle or sector, what is the area formula for 'Life Mathematics (Profit, Loss, Compound Interest)'?

(A)

Area of sector $= \frac{\theta}{360^\circ} \times \pi r^2$ or $\frac{lr}{2}$ (Life Mathematics (Profit, Loss, Compound Interest))

(B)

Only perimeter

(C)

Area equals diameter

(D)

None of these

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

In Chemistry, examine the topic of Reagent used to distinguish between aldehydes and ketones. Which statement is scientifically accurate?

(A)

Neutral FeCl3 solution

(B)

Lucas reagent

(C)

Tollens' reagent (Ammoniacal Silver Nitrate) which gives a silver mirror with aldehydes

(D)

Ninhydrin reagent

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2021 (234 questions)

Q1.

In Biological Sciences, identify the accurate description regarding Powerhouse of the eukaryotic cell responsible for cellular respiration and ATP synthesis.

(A)

Lysosomes, digesting cellular debris

(B)

Mitochondria, containing enzymes for the Krebs cycle and oxidative phosphorylation

(C)

Golgi apparatus, packaging lipids

(D)

Ribosomes, synthesizing proteins

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

In Chemistry, examine the topic of Oxidation state of Manganese in Potassium Permanganate ($KMnO_4$). Which statement is scientifically accurate?

(A)

+7

(B)

+6

(C)

+4

(D)

+2

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2020 (257 questions)

Q1.

In Chemistry, examine the topic of Avogadro's number and definition of one mole of a substance. Which statement is scientifically accurate?

(A)

6.022 \times 10^{23} elementary entities (atoms, molecules, or ions)

(B)

602 \times 10^{-19} particles

(C)

011 \times 10^{23} particles

(D)

6.022 \times 10^{22} particles

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

In Chemistry, examine the topic of Catalyst used in the Haber-Bosch process for industrial synthesis of Ammonia ($N_2 + 3H_2 \rightleftharpoons 2NH_3$). Which statement is scientifically accurate?

(A)

Platinum gauze (Pt)

(B)

Nickel (Ni) in Raney form

(C)

Finely divided Iron (Fe) with Molybdenum (Mo) or K2O/Al2O3 as promoter

(D)

Vanadium pentoxide (V2O5)

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2019 (242 questions)

Q1.

Regarding Tamil (தமிழ் - NMMS Eligible), which statement represents a core foundational principle of Correct grammatical structure of affirmative sentences?

(A)

Verb + Subject + Object

(B)

Object + Verb + Subject

(C)

Object + Subject + Verb

(D)

Subject + Verb + Object in standard grammatical syntax

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

Solve the linear equation for $x$: $7x + 11 = 25$.

(A)

x = 2

(B)

x = 1

(C)

x = 4

(D)

x = 3

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2018 (222 questions)

Q1.

In Physics, consider the Conservation principle underlying Kirchhoff's Junction Rule (Current Law). Which statement correctly defines this principle?

(A)

Conservation of Electric Charge ($\sum I_{\text{in}} = \sum I_{\text{out}}$)

(B)

Conservation of Energy

(C)

Conservation of Angular Momentum

(D)

Conservation of Linear Momentum

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

Solve the linear equation for $x$: $6x + 3 = 33$.

(A)

x = 4

(B)

x = 6

(C)

x = 5

(D)

x = 7

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2017 (212 questions)

Q1.

Regarding Tamil (தமிழ் - NMMS Eligible), which statement represents a core foundational principle of Role of fundamental duties in the constitutional civic framework?

(A)

Granting absolute immunity from civil laws

(B)

Allowing tax evasion under certain conditions

(C)

Mandating foreign citizenship upon majority

(D)

Fostering civic consciousness, preserving national integrity, and protecting the environment

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

In Physics, consider the SI unit of electric current and magnetic flux density. Which statement correctly defines this principle?

(A)

Volt (V) and Weber (Wb)

(B)

Ohm (Ω) and Henry (H)

(C)

Coulomb (C) and Gauss (G)

(D)

Ampere (A) and Tesla (T)

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2016 (233 questions)

Q1.

Regarding Tamil (தமிழ் - NMMS Eligible), which statement represents a core foundational principle of Importance of environmental conservation and biodiversity?

(A)

Maximizing industrial waste output

(B)

Accelerating deforestation for urban sprawl

(C)

Maintaining ecological equilibrium, nutrient cycling, and climate regulation

(D)

Eliminating apex predators from natural habitats

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

Regarding Tamil (தமிழ் - NMMS Eligible), which statement represents a core foundational principle of Role of fundamental duties in the constitutional civic framework?

(A)

Mandating foreign citizenship upon majority

(B)

Allowing tax evasion under certain conditions

(C)

Fostering civic consciousness, preserving national integrity, and protecting the environment

(D)

Granting absolute immunity from civil laws

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

2015 (241 questions)

Q1.

In Biological Sciences, identify the accurate description regarding Vascular plant tissue responsible for unidirectional transport of water and dissolved minerals from roots to leaves.

(A)

Xylem (composed of tracheids, vessels, xylem parenchyma, and xylem fibres)

(B)

Collenchyma (supporting tissue)

(C)

Phloem (sieve tubes and companion cells)

(D)

Cambium (meristematic tissue)

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view

Q2.

In Biological Sciences, identify the accurate description regarding Vascular plant tissue responsible for unidirectional transport of water and dissolved minerals from roots to leaves.

(A)

Collenchyma (supporting tissue)

(B)

Cambium (meristematic tissue)

(C)

Xylem (composed of tracheids, vessels, xylem parenchyma, and xylem fibres)

(D)

Phloem (sieve tubes and companion cells)

Show answer & solution

Verified Answer & Solution Locked

Sign in to your free student account to reveal verified answers and step-by-step solutions.

Sign in to view