10,359 previous year CISCE Board - ISC Class 12 (Board Examination) questions, grouped by year, with answers and solutions.
Refer to the Case Study 'Case Study: Parabolic Cable Geometry in Civil Engineering Suspension Bridges' to answer:
Determine the parameter $c$ in the parabolic equation $y = ax^2 + c$ from the vertex information.
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.
Sentence Transformation: How can the sentence related to 'Business Finance: Sources of Capital, Fixed and Working Capital Management' be rewritten correctly?
Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): DNA replication in all prokaryotic and eukaryotic organisms is semi-conservative.
Reason (R): Each daughter double helix retains one intact parental template strand and one newly synthesized complementary strand.
Refer to the Case Study 'Case Study: Parabolic Cable Geometry in Civil Engineering Suspension Bridges' to answer:
What is the vertical height of the suspension cable at a horizontal distance of $25\text{ m}$ from the bridge center?
Place Value & Numbers: What is the place value of the underlined digit in 'Probability: Conditional Probability, Multiplication Rule, Bayes' Theorem and Bernoulli Trials'?
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.
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 quadratic equation $x^2 - 6x + 9 = 0$ has real and equal roots.
Reason (R): A quadratic equation $ax^2 + bx + c = 0$ has real and equal roots if and only if its discriminant $D = b^2 - 4ac = 0$.
Environmental Protection: What is the most effective approach for 'Boolean Algebra: Logic Gates, Truth Tables, Karnaugh Maps (K-Maps) and Boolean Expression Simplification'?
Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): Under the Constitution of India, the judiciary enjoys structural independence from executive and legislative interference.
Reason (R): Judges of the Supreme Court and High Courts have security of tenure and their judicial salaries are charged directly to the Consolidated Fund of India.
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.
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