Junior college (Class 11-12)

Tamil Nadu Board - Class 12 (Higher Secondary +2) previous year questions (PYQ)

6,332 previous year Tamil Nadu Board - Class 12 (Higher Secondary +2) questions, grouped by year, with answers and solutions.

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2026 (1219 questions)

Q1.
In Physics, consider the Nature and magnification of the image formed by a concave mirror when an object is placed at the center of curvature (C). Which statement correctly defines this principle?

(A)
Real, inverted, and diminished
(B)
Virtual, erect, and magnified
(C)
Real, inverted, and equal in size to the object (magnification m = -1)
(D)
Virtual, erect, and diminished
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Q2.
In Physics, consider the Phenomenon responsible for the twinkling of stars in the night sky. Which statement correctly defines this principle?

(A)
Total internal reflection inside clouds
(B)
Diffraction of light by interstellar dust
(C)
Dispersion of light by water droplets
(D)
Atmospheric refraction of starlight through turbulent air layers of varying refractive indices
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2025 (427 questions)

Q1.
In Biological Sciences, identify the accurate description regarding Process by which green plants release water vapor into the atmosphere primarily through stomata.

(A)
Transpiration, which drives sap ascent and cools plant tissues
(B)
Guttation
(C)
Respiration
(D)
Imbibition
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Q2.
In Biological Sciences, identify the accurate description regarding Structural and functional filtration unit of the human kidney.

(A)
Hepatic lobule
(B)
Alveolus
(C)
Nephron, consisting of glomerulus, Bowman's capsule, and renal tubule
(D)
Neuron
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2024 (776 questions)

Q1.

Fractions and Decimals: How do we compare fractions in 'Ordinary Differential Equations (First Order, Variable Separable, Linear Differential Equations)' with like denominators?


(A)
When denominators are equal, the fraction with the greater numerator is larger (Ordinary Differential Equations (First Order, Variable Separable, Linear Differential Equations))
(B)
Invert the fractions
(C)
Ignore numerators
(D)
None of these
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Q2.

Higher Academic Core: In advanced conceptual study of 'Environmental Issues' in Genetics, Biotech & Human Systems, which foundational mechanism is universally verified?

(A)

Empirically validated biological, physical, or social dynamics following standard scientific methodology (Environmental Issues)

(B)

Unsubstantiated speculative claims lacking experimental replication or peer verification

(C)

Deterministic models that reject thermodynamic entropy and stochastic variance

(D)

Isolated observations taken under non-standard uncontrolled environmental extremes

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2023 (686 questions)

Q1.
In Biological Sciences, identify the accurate description regarding Valve located between the left atrium and left ventricle of the human heart.

(A)
Pulmonary semilunar valve
(B)
Bicuspid (Mitral) valve, preventing backflow of oxygenated blood during ventricular systole
(C)
Tricuspid valve
(D)
Aortic semilunar valve
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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)
Phloem (sieve tubes and companion cells)
(B)
Collenchyma (supporting tissue)
(C)
Cambium (meristematic tissue)
(D)
Xylem (composed of tracheids, vessels, xylem parenchyma, and xylem fibres)
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2022 (415 questions)

Q1.
In Chemistry, examine the topic of Periodic trend of electronegativity across a period from left to right. Which statement is scientifically accurate?

(A)
Electronegativity decreases due to shielding effect
(B)
Electronegativity increases due to increase in effective nuclear charge ($Z_{\text{eff}}$) and decrease in atomic radius
(C)
Electronegativity first decreases then sharply increases
(D)
Electronegativity remains constant across representative elements
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Q2.
What is 96 minus 11?

(A)
86
(B)
85
(C)
84
(D)
90
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2021 (404 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)
B positive (B+)
(D)
A positive (A+)
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Q2.
In Biological Sciences, identify the accurate description regarding Phenotypic ratio of a classic Mendelian monohybrid cross in the F2 generation.

(A)
1 : 1 : 1 : 1
(B)
9 : 3 : 3 : 1
(C)
3 : 1 (Dominant to Recessive phenotype)
(D)
1 : 2 : 1
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2020 (387 questions)

Q1.
In Chemistry, examine the topic of Functional group present in all Carboxylic Acids. Which statement is scientifically accurate?

(A)
CO- (Carbonyl ketone group)
(B)
CHO (Formyl group)
(C)
COOH (Carboxyl group composed of carbonyl and hydroxyl groups)
(D)
OH (Alcoholic hydroxyl group)
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Q2.

Living World: What is the key adaptive feature of plants or animals in 'Human Reproduction (Gametogenesis, Fertilisation, Embryonic Development)'?


(A)
Natural adaptations for food, habitat, and survival (Human Reproduction (Gametogenesis, Fertilisation, Embryonic Development))
(B)
Behaving like non-living matter
(C)
No respiration
(D)
None of these
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2019 (388 questions)

Q1.
In Biological Sciences, identify the accurate description regarding Process by which green plants release water vapor into the atmosphere primarily through stomata.

(A)
Imbibition
(B)
Respiration
(C)
Transpiration, which drives sap ascent and cools plant tissues
(D)
Guttation
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Q2.
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)
A positive (A+)
(C)
B positive (B+)
(D)
O negative (O-)
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2018 (405 questions)

Q1.

Water and Atmosphere: What is the most effective water conservation technique in 'Coordination Chemistry (Werner's Theory, Valence Bond Theory, Crystal Field Theory, Isomerism)'?


(A)
Rainwater harvesting (RWH) and traditional tanks (Eris) (Coordination Chemistry (Werner's Theory, Valence Bond Theory, Crystal Field Theory, Isomerism))
(B)
Wasting water
(C)
Dumping waste
(D)
None of these
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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)
Ninhydrin reagent
(C)
Lucas reagent
(D)
Tollens' reagent (Ammoniacal Silver Nitrate) which gives a silver mirror with aldehydes
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2017 (431 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)
Cambium (meristematic tissue)
(C)
Collenchyma (supporting tissue)
(D)
Phloem (sieve tubes and companion cells)
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Q2.
In Biological Sciences, identify the accurate description regarding Primary photosynthetic pigment responsible for absorbing blue and red light wavelengths.

(A)
Carotenoids
(B)
Anthocyanin
(C)
Phycobilin
(D)
Chlorophyll a
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2016 (404 questions)

Q1.
In Physics, consider the Work-Energy Theorem statement for a particle. Which statement correctly defines this principle?

(A)
Work done equals change in potential energy only
(B)
Work done equals rate of change of momentum
(C)
Work done is always zero under variable forces
(D)
Work done by all forces acting on a particle equals the change in its kinetic energy ($W = \Delta K$)
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Q2.
In Physics, consider the Relationship between focal length $f$ and radius of curvature $R$ for spherical mirrors. Which statement correctly defines this principle?

(A)
f = 2R
(B)
f = R^2
(C)
f = \frac{R}{2}
(D)
f = \frac{1}{R}
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2015 (390 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+)
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Q2.
In Biological Sciences, identify the accurate description regarding Valve located between the left atrium and left ventricle of the human heart.

(A)
Pulmonary semilunar valve
(B)
Aortic semilunar valve
(C)
Bicuspid (Mitral) valve, preventing backflow of oxygenated blood during ventricular systole
(D)
Tricuspid valve
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