Question

IN.
IV.
CROTU,
Fill in the blanks
i) Sound travels through a....
ii) The Substances which reduces friction are called...
iii) Coal tar is a mixture of about................substance.
iv) Under high pressure and ...... Dead plants got slowly converted to
Match the following.
A
B
Species
Spindle shaped
Muscle cells
climatic change
Lubricants
can impair hearing
Migration
Reduces friction
Damaged eardrum
Fuel
Carbon
Population capable of Inter bree
Loudness of sound is expressed in Baking of bread
Yeast
Decibel
Complete the following reaction.
a) Copper sulphate + Zinc granule
b) Iron Sulphate + Copper
c) Iron + Oxygen + water
V.​

Answer 1

Answer:

frequency

lubricant

Coal tar is a complex mixture of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds.

heat

Explanation:

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Answer 2

Answer:

1. medium
2. bb

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