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Subjects
Science State Board
Class 9
Applied chemistry
Textbook questions
3.
Choose the correct answer III
Exercise condition:
4
m.
1.
This type of food protect us from deficiency diseases.
Fats
Proteins
Vitamins
Carbohydrates
2.
Radiochemistry deals with
nanoparticles
batteries
isotopes
oxidants
3.
The groups responsible for the colour of an organic compound is called
auxochrome
chromogen
chromophore
isotopes
4.
Chlorinated hydrocarbons are used as
preservatives
pesticides
food colourants
fertilizers
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