HARD
8th Maharashtra Board
IMPORTANT
Earn 100

Write notes short notes on: Uses of plastic

Important Questions on Man Made Materials

HARD
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Can you tell?
Make a list of 20 different manmade materials present in your home, school and places around and discuss.
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Can you tell?
Which material is wrapped around the items of glass or similar material during transport to prevent from breaking up?
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Exercises>Q 1
Plastic shows _____ (plasticity/ elasticity) property, hence it can be moulded to any shape.
 
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Exercises>Q 1
Motor cars are coated with _____.
MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Exercises>Q 1
Thermocol melts at more than  _____ (100/150) ºC.
HARD
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Exercises>Q 1
_____ glass dissolves in water. (Borosilicate/ Alkali silicate)
HARD
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Exercises>Q 2

Who is my partner ?

‘A’ column             ‘B’ column
a. Lead glass          i. Plates
b. Bakelite              ii. Mattresses
c. Thermocol         iii. Electric bulb
d. Optic glass         iv. Electric switch
e. Polypropylene     v. Lens

MEDIUM
8th Maharashtra Board
IMPORTANT
General Science>Chapter 17 - Man Made Materials>Exercises>Q 3
Thermocol is produced from which material?