11,855 previous year CISCE Board - ICSE Class 10 (Board Examination) questions, grouped by year, with answers and solutions.
Directions: In the following question, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): Alveoli in the human lungs are richly supplied with extensive capillary networks.
Reason (R): Dense capillary networks maximize the surface area and provide thin diffusion barriers for rapid gas exchange of $O_2$ and $CO_2$.
Vocabulary & Comprehension: What is the precise contextual meaning of 'Library Classes: Wrapper Classes and Autoboxing/Unboxing'?
Vocabulary & Comprehension: What is the precise contextual meaning of 'Library Classes: Wrapper Classes and Autoboxing/Unboxing'?
Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): Diamond sparkles brilliantly with internal radiance.
Reason (R): Total internal reflection of light occurs inside diamond because its critical angle is exceptionally small (approximately 24.4°).
Vocabulary & Comprehension: What is the precise contextual meaning of 'The First War of Independence (1857): Causes (Political, Socio-religious, Economic, Military) and Consequences'?
Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): Danger signals on communication towers and traffic posts are always illuminated in red color.
Reason (R): Red light has the longest wavelength in the visible spectrum and suffers minimum Rayleigh scattering ($I \propto 1/\lambda^4$) through fog and smoke.
Refer to the Case Study 'Case Study: The Chlor-Alkali Electrochemical Process in Chemical Industry' to answer:
During the chlor-alkali process, which chemical product is evolved at the positively charged anode?
Vocabulary & Comprehension: What is the precise contextual meaning of 'Periodic Properties and Variations: Atomic Size, Ionisation Energy, Electron Affinity & Electronegativity'?
Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): Danger signals on communication towers and traffic posts are always illuminated in red color.
Reason (R): Red light has the longest wavelength in the visible spectrum and suffers minimum Rayleigh scattering ($I \propto 1/\lambda^4$) through fog and smoke.
Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A): Danger signals on communication towers and traffic posts are always illuminated in red color.
Reason (R): Red light has the longest wavelength in the visible spectrum and suffers minimum Rayleigh scattering ($I \propto 1/\lambda^4$) through fog and smoke.
[SAT] Who was the Chairman of the Drafting Committee of the Indian Constituent Assembly?
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