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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] straightforward exam-ready
The ozone layer protects life on Earth mainly by: (A) Providing oxygen for respiration (B) Shielding the Earth's surface from ultraviolet radiation (C) Absorbing infrared radiation from the Sun (D) Filtering out visible light
  1. A Providing oxygen for respiration
  2. B Shielding the Earth's surface from ultraviolet radiation
  3. C Absorbing infrared radiation from the Sun
  4. D Filtering out visible light
Generated by claude-sonnet-4-6 · 2026-06-26 00:58 · grounding rag
Model Answer

(B) Shielding the Earth's surface from ultraviolet radiation

The ozone layer absorbs harmful UV radiation from the Sun, protecting organisms from damage such as skin cancer in humans.

Source: Chapter 13, Section 13.2.1

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Explanation

The passage explicitly states: "ozone performs an essential function. It shields the surface of the earth from ultraviolet (UV) radiation from the Sun." Options A, C, and D are incorrect — ozone does not provide oxygen for respiration (that is O₂), does not primarily absorb infrared radiation, and does not filter visible light.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.