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NCERT Solutions for Class 6 Science - Sorting Materials into Groups

The things, which we all use in our daily life are made up of different types of materials. All these materials have mass, shape and are classified based on many criteria, including their physical states, properties of materials, etc.

Let‘s have a look at the questions and answers for a better understanding.

Exercises

Q1. Name five objects which can be made from wood.
Ans: Table, Chair, Bed, Doors, Bullock cart, etc.
NCERT Solutions for Class 6 Science - Sorting Materials into Groups


Q2. Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt
Ans: Glass bowl and steel spoon.

Glass bowlGlass bowl

Steel SpoonSteel Spoon

Q3. Match the objects given below with the materials from which they could be made. Remember, an object could be made from more than one material and a given material could be used for making many objects

NCERT Solutions for Class 6 Science - Sorting Materials into Groups

Ans:

NCERT Solutions for Class 6 Science - Sorting Materials into Groups


Q4. State whether the statements given below are True or False.

Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(i) Stone is transparent, while glass is opaque.

 

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Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(ii) A notebook has lustre while an eraser does not.
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Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(iii) Chalk dissolves in water.
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Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(iv) A piece of wood floats on water.
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Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(v) Sugar does not dissolve in water.
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Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(vi) Oil mixes with water.
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Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(vii) Sand settles down in the water.
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Question for NCERT Solutions: Sorting Materials into Groups
Try yourself:(viii) Vinegar dissolves in water.
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Q5. Given below are the names of some objects and materials: Water, basketball, orange, sugar, globe, apple and earthen pitcher Group them as:
(a) Round shaped and other shapes
Ans: Round shaped: Basketball, orange, globe, apple, and earthen pitcher 
Other shapes: Water and sugar.

(b) Eatables and non-eatables
Ans: Eatables: Water, orange, sugar, and apple 
Noneatables: Basketball, globe, and earthen pitcher.


Q6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Ans: Wooden block, Paper, Balloon, Hair, plastic bottle, wooden logs, Boat, etc. will float on water. A few of these like hair, the balloon can float on kerosene or oil. Generally, substances have less density than oil and water can float. For example, few types of wood have densities higher than oil but less than water, so it floats on water but not on kerosene.
NCERT Solutions for Class 6 Science - Sorting Materials into Groups


Q7. Find the odd one out from the following:

(a) Chair, Bed, Table, Baby, Cupboard
Ans: Baby: Rest others are made up of wood and are non–living things.

(b) Rose, Jasmine, Boat, Marigold, Lotus
Ans: Boat: Rest others are flowers.

(c) Aluminium, Iron, Copper, Silver, Sand
Ans: Sand: Rest others are metals.

(d) Sugar, Salt, Sand, Copper sulfate
Ans: Sand: Rest others are in crystal forms.

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FAQs on NCERT Solutions for Class 6 Science - Sorting Materials into Groups

1. What is the importance of sorting materials into groups?
Ans. The importance of sorting materials into groups is to identify and categorize them based on their properties, characteristics, and uses. This helps in better understanding and managing the materials, as well as in making informed decisions about their usage and disposal. Sorting materials also aids in the development of scientific skills such as observation, classification, and inference.
2. How can we classify materials into groups?
Ans. Materials can be classified into groups based on various criteria such as physical properties (color, shape, texture, size), chemical properties (reactivity, flammability, acidity), and uses (building materials, food items, clothing, etc.). For example, we can group materials based on their ability to conduct electricity, magnetic properties, solubility in water, etc.
3. What are the different types of materials that can be sorted into groups?
Ans. There are various types of materials that can be sorted into groups such as natural materials (wood, cotton, wool), man-made materials (plastics, synthetic fibers), metals (iron, copper, gold), non-metals (sulfur, carbon, oxygen), and composite materials (concrete, fiberglass). Each of these materials has distinct properties and uses that determine their grouping.
4. How is sorting materials into groups useful in our daily lives?
Ans. Sorting materials into groups is useful in our daily lives in many ways. For example, it helps us in organizing and managing our household items, separating recyclable materials from non-recyclable ones, identifying safe and toxic substances, selecting appropriate materials for various purposes, and understanding the properties of different materials we use in our daily lives.
5. What are the challenges in sorting materials into groups?
Ans. Sorting materials into groups can be challenging due to various reasons such as the complexity of materials, the diversity of their properties and uses, the lack of standardization in classification systems, and the variability of properties within a material. Moreover, some materials may have overlapping properties or may not fit into any particular group, making their classification difficult. However, these challenges can be overcome through a systematic and scientific approach to sorting materials.
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