---
title: "NCERT Solutions for Class 6 Science Chapter 6 Exercise 6.6"
url: https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-6
dateModified: 2026-10-07T16:01:29+00:00
---

# NCERT Solutions for Class 6 Science Chapter 6 Exercise 6.6

Chapter 6: Materials Around Us. Every question from Exercise 6.6, with full working and the final answer.

Free PDF (15 pages): https://www.swavid.com/api/seo/pdf/ncert/science/class-6/swavid-ncert-solutions-class-6-science-chapter-6-materials-around-us-5a47167364.pdf

## Activity 6.6: Let us classify

### Question 1

*5 marks · Case-based*

Classify the following objects as transparent, translucent or opaque in Table 6.4.

**Part (i)**

1. Glass tumbler allows objects to be seen clearly through it.
2. Therefore, a glass tumbler is classified as a transparent object.

Answer (i): Transparent

**Part (ii)**

1. Butter paper allows objects to be seen through it, but not clearly.
2. Therefore, butter paper is classified as a translucent object.

Answer (ii): Translucent

**Part (iii)**

1. Eraser does not allow light or objects to be seen through it at all.
2. Therefore, an eraser is classified as an opaque object.

Answer (iii): Opaque

**Part (iv)**

1. Frosted glass has a hazy surface through which objects cannot be seen clearly.
2. Therefore, frosted glass is classified as a translucent object.

Answer (iv): Translucent

**Part (v)**

1. Wooden board is made of wood, which is a material through which we are not able to see at all.
2. Therefore, a wooden board is classified as an opaque object.

Answer (v): Opaque

**Part (vi)**

1. Window glass allows objects to be seen clearly through it.
2. Therefore, window glass is classified as a transparent object.

Answer (vi): Transparent

**Answer:** The objects are classified into transparent, translucent, and opaque categories according to the properties of the materials they are made of.

> Common mistake: Confusing translucent materials like frosted glass or butter paper with transparent or opaque materials.

## Related pages

- [All Chapter 6 NCERT solutions](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions)
- [Exercise 6.1](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-1)
- [Exercise 6.2](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-2)
- [Exercise 6.3](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-3)
- [Exercise 6.4](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-4)
- [Exercise 6.5](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-5)
- [Exercise 6.7](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-7)
- [Exercise 6.8](https://www.swavid.com/science/class/6/chapter/materials-around-us/ncert-solutions/exercise-6-8)

Solutions written by SwaVid, a personal AI tutor for Class 6 to 10 Maths and Science. Practise this chapter free: https://www.swavid.com/start/student