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 Chapter 4 Sorting Materials Into Groups
Answer :
Objects \(\space \) \(\rightarrow \) \(\space \) Material
Book \(\rightarrow \) Paper
Tumbler \(\rightarrow \) Glass
Chair \(\rightarrow \) Wood
Toy \(\rightarrow \) Plastics
Q4 )
State whether the statements given below are True or False.
(i) Stone is transparent, while glass is opaque.
(ii) A notebook has luster while eraser does not.
(iii) Chalk dissolves in water.
(iv) A piece of wood floats on water.
(v) Sugar does not dissolve in water.
(vi) Oil mixes with water.
(vii) Sand settles down in water.
(viii) Vinegar dissolves in water.
NCERT Solutions for Class 6 Science Chapter 4 Sorting Materials Into Groups
Answer :
(i) Stone is transparent, while glass is opaque. \(\rightarrow\) FALSE
REASON : Stone is opaque because light does not pass through stone but glass is transparent because the light is passed through the glass.
(ii) A notebook has luster while the eraser does not. \(\rightarrow\) FALSE
REASON : No, notebook and eraser don't have luster because they aren't shiny objects.
(iii) Chalk dissolves in water. \(\rightarrow\) FALSE
REASON : No chalk does not dissolves in water because chalk is not a soluble substance.
(iv) A piece of wood floats on water. \(\rightarrow\) TRUE
(v) Sugar does not dissolve in water. \(\rightarrow\) FALSE
REASON : Sugar dissolve in water because it is a soluble substanse.
(vi) Oil mixes with water. \(\rightarrow\) FALSE
REASON : No oil does not mix with water because it is not a soluble
(vii) Sand settles down in water. \(\rightarrow\) TRUE
(viii) Vinegar dissolves in water.\(\rightarrow\) TRUE
Q5 )
Given below are the names of some objects and materials:
Water, basket ball, orange, sugar, globe, apple and earthen pitcher. Group them as:
(a) Round shaped and other shapes (b) Eatables and non eatables
NCERT Solutions for Class 6 Science Chapter 4 Sorting Materials Into Groups
Answer :
(a) Round shaped – Basketball, Orange, Globe, Apple, Earthen pitcher
Other shapes – Water, Sugar
(b) Eatables – Water, Orange, Sugar, Apple
Non-eatables – Basketball, Globe, 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.
NCERT Solutions for Class 6 Science Chapter 4 Sorting Materials Into Groups
Answer :
List of some items that float on water :
(1) Piece of paper
(2) Wood
(3) Balloon
(4) Plastic bottle
(5) Ice
(6) Boat
List of items that float on an oil or kerosene :
(1) Piece of paper
(2) Plastic bottle
(3) Balloon
(4) Wood
Q7 )
Find the odd one out from the following:
a) Chair, Bed, Table, Baby, Cupboard
b) Rose, Jasmine, Boat, Marigold, Lotus
c) Aluminium, Iron, Copper, Silver, Sand
d) Sugar, Salt, Sand, Copper sulphate
NCERT Solutions for Class 6 Science Chapter 4 Sorting Materials Into Groups
Answer :
(a) BABY : Others are made up of wood and non-living but the baby is not.
(b) BOAT : Others are flowers but a boat is an object is made up of wood.
(c) SAND : Others are metals, but sand is not a metal.
(d) SAND : Others are soluble in water, but sand is insoluble in water.