NCERT Solutions for Class 6 Science Chapter 4 Sorting Materials Into Groups

Q1 ) Name five objects which can be made from wood.

Answer :

Objects which can be made from wood :

a) Table

b) Chair

c) Doors

d) Desk

e) Box

f) Window

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

Answer :

Glass bowl and steel spoon are those objects which shine.

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.

Objects

Material

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.

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

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.

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

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.