GSEB Class 6 Science Solutions Chapter 4 Sorting Materials into Groups

Question 1. Name five objects which can be made from wood.
Answer: Five items that can be created from wood include a table, a chair, doors, a boat, and a bed.
In simple words: Things like tables, chairs, doors, boats, and beds can all be built using wood.

Exam Tip: When listing objects made from a specific material, try to recall common household items first, as they are usually easy examples.

Question 2. Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt
Answer: A glass bowl and a steel spoon are the objects that appear shiny from the given list.
In simple words: Out of the items given, the glass bowl and the steel spoon are the ones that reflect light and look bright.

Exam Tip: Luster is the property of a material to reflect light. Metals typically show a high luster. Glass can also reflect light and appear shiny.

Question 3. 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.

Answer: The correct matches for the objects with their suitable materials are shown in the table below:

Exam Tip: Remember that many objects can be constructed from a variety of materials, and a single material can be utilized for numerous different items. Consider all possibilities.

Question 4. State whether the statements given below are 'True' or 'False'.
1. Stone is transparent, while the glass is opaque.
2. A notebook has luster while the eraser does not.
3. Chalk dissolves in water.
4. A piece of wood floats on water.
5. Sugar does not dissolve in water.
6. Oil mixes with water.
7. Sand settles down in the water.
8. Vinegar dissolves in water.
Answer:
1. False
2. False
3. False
4. True
5. False
6. False
7. True
8. True
In simple words: We check each statement to see if it's correct. For instance, stone isn't see-through, and sugar does dissolve in water.

Exam Tip: To answer True/False questions correctly, think about the properties of each material mentioned. For example, 'transparent' means light passes through, while 'opaque' means it does not.

Question 5. 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
(b) Eatables and non-eatables
Answer:
(a) (i) Round shaped: Basketball, apple, orange, globe, earthen pitcher.
(ii) Other shapes: Water, sugar.
(b) (i) Eatables: Water, orange, sugar, and apple.
(ii) Non-eatables: Basketball, globe, and earthen pitcher.
In simple words: We sort the items into two main groups: first by their shape, then by whether they can be eaten or not.

Exam Tip: When categorizing, look at each item's primary characteristic. For shape, imagine it; for eatables, consider if it's typically consumed by humans.

Question 6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Answer:
(A) A list of some items that float on water includes:
(i) Paper
(ii) Wood
(iii) Thin plastic sheets
(iv) Wax
(v) Ice
(vi) Thermocol
(vii) Oil
(B) A list of items that float on oil includes:
(i) Paper
(ii) Plastic sheet
(iii) Wax
(iv) Thermocol
(v) Wood
(C) A list of items that float on kerosene includes:
(i) Paper
(ii) Thermocol
(iii) Thin plastic sheet
In simple words: We list various things that float on water, then we check which of these also float when placed on oil or kerosene.

Exam Tip: Whether an object floats or sinks depends on its density compared to the liquid it's in. Objects less dense than the liquid will float.

Question 7. Find the odd one out from the following:
(a) Chair, Bed, Table, Baby, Cupboard
(b) Rose, Jasmine, Boat, Marigold, Lotus
(c) Aluminum, Iron, Copper, Silver, Sand
(d) Sugar, Salt, Sand, Copper sulfate
Answer:
(a) Baby (all other items are non-living objects)
(b) Boat (all other items are types of flowers)
(c) Sand (all other items are metals)
(d) Sand (all other items are soluble in water)
In simple words: For each group, we find the item that doesn't fit with the rest, based on a shared characteristic like being living, a type of flower, a metal, or something that dissolves.

Exam Tip: When identifying the odd one out, first try to find a common property shared by three or more items in the list. The item that doesn't share this property is usually the answer.