Tamil Nadu Board - Class 7 previous year questions (PYQ)

2026 (1696 questions)

Q1.

In Physics, consider the Phenomenon responsible for the twinkling of stars in the night sky. Which statement correctly defines this principle?

(A)

Dispersion of light by water droplets

(B)

Total internal reflection inside clouds

(C)

Diffraction of light by interstellar dust

(D)

Atmospheric refraction of starlight through turbulent air layers of varying refractive indices

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Q2.

Solve the linear equation for $x$: $6x + 13 = 31$.

(A)

x = 5

(B)

x = 2

(C)

x = 3

(D)

x = 4

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2025 (248 questions)

Q1.

In Biological Sciences, identify the accurate description regarding Primary photosynthetic pigment responsible for absorbing blue and red light wavelengths.

(A)

Phycobilin

(B)

Chlorophyll a

(C)

Anthocyanin

(D)

Carotenoids

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Q2.

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

(A)

Accelerating deforestation for urban sprawl

(B)

Eliminating apex predators from natural habitats

(C)

Maximizing industrial waste output

(D)

Maintaining ecological equilibrium, nutrient cycling, and climate regulation

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2024 (408 questions)

Q1.

யாப்பு & மரபு: 'ஒன்றல்ல இரண்டல்ல' செய்யுளின் உறுப்புகள் அல்லது மரபுத் தொடரின் பொருள் யாது?

(A)

எழுத்து, அசை, சீர், தளை, அடி, தொடை அல்லது சரியான மரபுப் பொருள் (ஒன்றல்ல இரண்டல்ல)

(B)

மரபற்ற சொல்

(C)

பொருளற்றது

(D)

இவற்றுள் எதுவுமில்லை

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Q2.

In Chemistry, examine the topic of pH of a neutral aqueous solution at 25°C (298 K). Which statement is scientifically accurate?

(A)

pH = 14

(B)

pH = 0

(C)

pH = 1

(D)

pH = 7, where [H^+] = [OH^-] = 10^{-7} \text{ M}

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2023 (412 questions)

Q1.

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)

Nickel (Ni) in Raney form

(B)

Vanadium pentoxide (V2O5)

(C)

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

(D)

Platinum gauze (Pt)

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Q2.

In English Language and Grammar, identify the grammatically correct sentence or rule regarding Appropriate preposition: 'He was thoroughly accustomed _____ working under strict deadlines.'.

(A)

to

(B)

with

(C)

for

(D)

in

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2022 (234 questions)

Q1.

In Biological Sciences, identify the accurate description regarding Structural and functional filtration unit of the human kidney.

(A)

Alveolus

(B)

Nephron, consisting of glomerulus, Bowman's capsule, and renal tubule

(C)

Neuron

(D)

Hepatic lobule

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Q2.

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

(A)

Ampere (A) and Tesla (T)

(B)

Ohm (Ω) and Henry (H)

(C)

Volt (V) and Weber (Wb)

(D)

Coulomb (C) and Gauss (G)

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2021 (222 questions)

Q1.

In Biological Sciences, identify the accurate description regarding Phenotypic ratio of a classic Mendelian monohybrid cross in the F2 generation.

(A)

1 : 2 : 1

(B)

9 : 3 : 3 : 1

(C)

1 : 1 : 1 : 1

(D)

3 : 1 (Dominant to Recessive phenotype)

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Q2.

In English Language and Grammar, identify the grammatically correct sentence or rule regarding Appropriate preposition: 'He was thoroughly accustomed _____ working under strict deadlines.'.

(A)

to

(B)

in

(C)

for

(D)

with

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2020 (228 questions)

Q1.

What is 40% of 800?

(A)

320

(B)

310

(C)

345

(D)

330

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Q2.

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

(A)

Maximizing industrial waste output

(B)

Maintaining ecological equilibrium, nutrient cycling, and climate regulation

(C)

Accelerating deforestation for urban sprawl

(D)

Eliminating apex predators from natural habitats

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2019 (232 questions)

Q1.

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

(A)

Accelerating deforestation for urban sprawl

(B)

Maintaining ecological equilibrium, nutrient cycling, and climate regulation

(C)

Eliminating apex predators from natural habitats

(D)

Maximizing industrial waste output

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Q2.

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

(A)

Eliminating apex predators from natural habitats

(B)

Accelerating deforestation for urban sprawl

(C)

Maximizing industrial waste output

(D)

Maintaining ecological equilibrium, nutrient cycling, and climate regulation

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2018 (236 questions)

Q1.

Optics and Reflection: In 'Cell Biology', what is the law governing the reflection of light?

(A)

Angle of incidence equals angle of reflection ($\angle i = \angle r$) (Cell Biology)

(B)

Angle of incidence is always double

(C)

No reflection occurs

(D)

None of these

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Q2.

Cartography: In the map of Tamil Nadu, what is the precise location of 'Direct and Indirect Speech basics'?

(A)

Identified with standard map symbols, district boundaries, and coastal alignment (Direct and Indirect Speech basics)

(B)

Drawn in Arabian Sea

(C)

Without legend

(D)

None of these

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2017 (214 questions)

Q1.

In English Language and Grammar, identify the grammatically correct sentence or rule regarding Idiom meaning: 'Bite the bullet'.

(A)

To shoot an accurate target

(B)

To eat something very hard

(C)

To retreat from an impending danger

(D)

To face a difficult or unpleasant situation with courage and fortitude

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Q2.

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

(A)

Mitochondria, containing enzymes for the Krebs cycle and oxidative phosphorylation

(B)

Ribosomes, synthesizing proteins

(C)

Lysosomes, digesting cellular debris

(D)

Golgi apparatus, packaging lipids

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2016 (244 questions)

Q1.

Divide 25 in the ratio 2 : 3.

(A)

20 and 15

(B)

12 and 13

(C)

9 and 16

(D)

10 and 15

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Q2.

Regarding Tamil (தமிழ்), 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)

Eliminating apex predators from natural habitats

(D)

Maintaining ecological equilibrium, nutrient cycling, and climate regulation

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2015 (204 questions)

Q1.

In Chemistry, examine the topic of Hybridization and molecular geometry of Methane ($CH_4$). Which statement is scientifically accurate?

(A)

sp^2 hybridization with trigonal planar geometry

(B)

dsp^2 hybridization with square planar geometry

(C)

sp hybridization with linear geometry

(D)

sp^3 hybridization with tetrahedral geometry and 109.5^\circ bond angles

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Q2.

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

(A)

COOH (Carboxyl group composed of carbonyl and hydroxyl groups)

(B)

CO- (Carbonyl ketone group)

(C)

OH (Alcoholic hydroxyl group)

(D)

CHO (Formyl group)

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