Karnataka Board - Class 8 previous year questions (PYQ)

2026 (1645 questions)

Q1.

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

Q2.

Solve the linear equation for $x$: $7x + 10 = 45$.

(A)

x = 5

(B)

x = 7

(C)

x = 4

(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

2025 (349 questions)

Q1.

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

(A)

Conservation of Magnetic Flux

(B)

Conservation of Charge

(C)

Conservation of Momentum

(D)

Conservation of Energy ($\sum \Delta V = 0$ in any closed loop)

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 Powerhouse of the eukaryotic cell responsible for cellular respiration and ATP synthesis.

(A)

Golgi apparatus, packaging lipids

(B)

Lysosomes, digesting cellular debris

(C)

Ribosomes, synthesizing proteins

(D)

Mitochondria, containing enzymes for the Krebs cycle and oxidative phosphorylation

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 (306 questions)

Q1.

Regarding Kannada (ಸಿರಿ ಕನ್ನಡ), 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)

Maintaining ecological equilibrium, nutrient cycling, and climate regulation

(D)

Maximizing industrial waste output

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.

Divide 30 in the ratio 2 : 3.

(A)

11 and 19

(B)

14 and 16

(C)

24 and 18

(D)

12 and 18

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 (311 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

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 Structural and functional filtration unit of the human kidney.

(A)

Neuron

(B)

Hepatic lobule

(C)

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

(D)

Alveolus

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 (200 questions)

Q1.

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

(A)

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

(B)

Lucas reagent

(C)

Ninhydrin reagent

(D)

Neutral FeCl3 solution

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 $x$: $2x + 4 = 16$.

(A)

x = 8

(B)

x = 7

(C)

x = 6

(D)

x = 5

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 (199 questions)

Q1.

Regarding Kannada (ಸಿರಿ ಕನ್ನಡ), which statement represents a core foundational principle of Correct grammatical structure of affirmative sentences?

(A)

Verb + Subject + Object

(B)

Subject + Verb + Object in standard grammatical syntax

(C)

Object + Subject + Verb

(D)

Object + Verb + Subject

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 Kannada (ಸಿರಿ ಕನ್ನಡ), 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

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 (201 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)

B positive (B+)

(C)

O negative (O-)

(D)

A positive (A+)

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 Structural and functional filtration unit of the human kidney.

(A)

Hepatic lobule

(B)

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

(C)

Alveolus

(D)

Neuron

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 (206 questions)

Q1.

In Physics, consider the Speed of electromagnetic waves in a vacuum according to Maxwell. Which statement correctly defines this principle?

(A)

c = \frac{\mu_0}{\varepsilon_0}

(B)

c = \mu_0 \varepsilon_0

(C)

c = \frac{1}{\sqrt{\mu_0 \varepsilon_0}} \approx 3 \times 10^8 \text{ m/s}

(D)

c = \sqrt{\mu_0 \varepsilon_0}

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 English Language and Grammar, identify the grammatically correct sentence or rule regarding Direct to Indirect speech conversion: She said, 'I am studying for my board examination.'.

(A)

She said that she had studied for her board examination.

(B)

She says that she was studying for her board examination.

(C)

She said that she is studying for her board examination.

(D)

She said that she was studying for her board examination.

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 (201 questions)

Q1.

In English Language and Grammar, identify the grammatically correct sentence or rule regarding Direct to Indirect speech conversion: She said, 'I am studying for my board examination.'.

(A)

She said that she had studied for her board examination.

(B)

She says that she was studying for her board examination.

(C)

She said that she is studying for her board examination.

(D)

She said that she was studying for her board examination.

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 $x$: $7x + 15 = 57$.

(A)

x = 5

(B)

x = 7

(C)

x = 8

(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

2017 (202 questions)

Q1.

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

(A)

+2

(B)

+6

(C)

+7

(D)

+4

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

(A)

To face a difficult or unpleasant situation with courage and fortitude

(B)

To retreat from an impending danger

(C)

To eat something very hard

(D)

To shoot an accurate target

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 (205 questions)

Q1.

What is 15% of 400?

(A)

85

(B)

60

(C)

70

(D)

50

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 $x$: $6x + 12 = 36$.

(A)

x = 5

(B)

x = 3

(C)

x = 6

(D)

x = 4

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 (206 questions)

Q1.

Regarding Kannada (ಸಿರಿ ಕನ್ನಡ), which statement represents a core foundational principle of Correct grammatical structure of affirmative sentences?

(A)

Object + Subject + Verb

(B)

Verb + Subject + Object

(C)

Object + Verb + Subject

(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.

In English Language and Grammar, identify the grammatically correct sentence or rule regarding Conditional Clause Type 3 structure for hypothetical past situations.

(A)

If they have alerted the authorities, the accident would prevent.

(B)

If they alerted the authorities earlier, the accident will be prevented.

(C)

If they would alert the authorities, the accident had been prevented.

(D)

If they had alerted the authorities earlier, the accident would have been prevented.

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