Question

7. Write True or False against each statement
Plastic is non-reactive. To se
Shawls and blankets can be made of synthetic fibres called Acrylic.
iii) Bakelite is a good conductor of heat and electricity.
iv) Materials made from plastics are environment friendly.
8. Categorise the following into Bio-degradable and non--biodegradable:
Teflon, Wood, Paper, Plastic bags, Cotton clothes, Dung, Peels of vegetables and fruits.
Bio-degradable
Non- Biodegradable
dod
2
9. Fill in the blanks:
a) The property of metals by which they can be beaten into sheets is called
b) The Property of metals by which they can be drawn into wires is called
c) Metals produce ringing sounds, they are said to be
d) Non-metal is essential for life which all living thing inhale during breathing is
10. Match Column A to Column B
A
B
Magnesium oxide
Stored in kerosene
Gold
Liquid at room temperature
Sodium
Jewellery
Basic
Mercury
three uses of metals and three uses of non-metals.​

Answer 1

7 . iv ) False

8 . Telfon, Wood , paper , plastic bags , ,cotton clothes are all non biodegradable wastes , while Dung , peels of fruits are biodegradable wastes.

9. d) Oxygen

Hope these answers help you friend ♥️

Answer 2

Answer:

here is u r answer dear

Explanation:

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