01. For each of the
following items, choose the most correct answer from the given alternatives and
write its letter beside the item number in your answer sheet.
i)
Decomposition means:
A. Building-up
B. Breaking down
C. Materials in the
environment
D. Matter
ii)
The following are the agrochemicals produced by the
knowledge of chemistry:
A. Soaps, detergents
B. Cements, plastic
containers
C. Fertilizers, weed
killers
D. Yeast, baking
powder
iii) The following are
beauty products produced using the knowledge of chemistry, except:
A. Nails varnish,
lotion
B. Lotion,
deodorants
C. Creams, lotion
D. Soaps, detergents
iv)
The chemical substance sprayed or sprinkled on crops
to destroy pests that would otherwise lead to low or no yields are:
A. Pesticides
B. Fertilizers
C. Weed killers
D. Animal vaccines
v)
The products produced using the knowledge of
chemistry and are used to improve one’s physical appearance are:
A. Home care
products
B. Beauty products
C. Medicines
D. Disinfectants
Answers:
|
i
|
ii
|
iii
|
iv
|
v
|
|
|
|
|
|
|
02. Define the
following terms
i.
Chemistry
ii.
Matter
iii. Science
iv.
Weed killers
03. List any four
agricultural chemicals produced by application of the knowledge of chemistry.
04. Why are we studying
chemistry?
05. Mention five
areas where the knowledge of chemistry is applied and how it is applied.
01. INTRODUCTION TO CHEMISTRY
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Oleh
uprising scientists
