Assam Board (SEBA / AHSEC) - Class 11 (HS First Year) previous year questions (PYQ)

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Money serves as an indispensable medium of exchange in modern market economies.

Reason (R): Money eliminates the need for double coincidence of wants inherent in barter trade systems.

Refer to the Case Study 'Case Study: Optical Fibers and Total Internal Reflection in Medical Endoscopy' to answer:

What is the primary function of the outer cladding layer in the fiber structure?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Money serves as an indispensable medium of exchange in modern market economies.

Reason (R): Money eliminates the need for double coincidence of wants inherent in barter trade systems.

Refer to the Case Study 'Case Study: Hazardous Enterprise and Supreme Court Doctrine of Absolute Liability' to answer:

What is the crucial legal distinction between the English rule of 'Strict Liability' and Indian 'Absolute Liability'?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Heavy water ($D_2O$) is utilized as a moderator in thermal nuclear power reactors.

Reason (R): Deuterium nuclei slow down energetic fission neutrons through elastic collisions without substantial parasitic neutron absorption.

Refer to the Case Study 'Case Study: Hazardous Enterprise and Supreme Court Doctrine of Absolute Liability' to answer:

What is the crucial legal distinction between the English rule of 'Strict Liability' and Indian 'Absolute Liability'?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Carboxylic acids exhibit higher acidity than corresponding phenols.

Reason (R): The carboxylate anion is stabilized by two equivalent resonance structures where negative charge resides on electronegative oxygen atoms.

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Electric current in a conductor is treated as a scalar physical quantity.

Reason (R): Although electric current has both magnitude and direction, it does not obey the laws of vector addition.

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Rusting of iron in moist air is an exothermic chemical oxidation process.

Reason (R): Rusting requires continuous absorption of thermal energy from ambient surroundings to proceed.

Refer to the Case Study 'Case Study: Parabolic Cable Geometry in Civil Engineering Suspension Bridges' to answer:

What geometric property distinguishes the vertex of the upward-opening parabola $y = ax^2 + c$ ($a > 0$)?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): The Simon Commission was met with widespread nationwide boycotts and black flag protests upon landing in Bombay in 1928.

Reason (R): The British colonial government failed to appoint a single Indian representative to the seven-member Indian Statutory Commission.

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Carboxylic acids exhibit higher acidity than corresponding phenols.

Reason (R): The carboxylate anion is stabilized by two equivalent resonance structures where negative charge resides on electronegative oxygen atoms.

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): The electrical conductivity of an intrinsic semiconductor increases with rise in temperature.

Reason (R): With increase in temperature, covalent bonds rupture, generating additional free conduction electrons and mobile holes.