Q16
1 markMCQSection A

The incorrect statement about ozone is:

Our Environment
Ozone

Options

(A)It is a deadly poisonous gas.
(B)It shields the surface of the earth from UV radiation from sun.
(C)It is used as a refrigerant and in fire-extinguishers.
(D)It is formed by combining oxygen molecule with free oxygen atom.
Official Answer

Ozone is not a deadly poisonous gas. It is a vital component of the stratosphere, shielding the surface of the earth from UV radiation from the sun.

ozonestratosphereUV radiation

Marking Scheme

  • 11 mark

Hint

Recall the properties and functions of ozone in the stratosphere.

Quick Oral Answer

Ozone is not a deadly poisonous gas. It is a vital component of the stratosphere, shielding the surface of the earth from UV radiation from the sun.

Analysis & Explanation

Ozone is a molecule composed of three oxygen atoms and plays a crucial role in protecting life on Earth. While it can be harmful in high concentrations, it is not a deadly poisonous gas. The other options are correct statements about ozone.

Common Mistakes

  1. 1Confusing ozone with other pollutants
  2. 2Underestimating the importance of ozone

Interesting Facts

Ozone is also used in water treatment and as a disinfectant

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2025?

This question carries 1 mark in the CBSE Class 10 Science 2025 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Our Environment" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Ozone" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2025 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2025 paper.