EASY
8th CBSE
IMPORTANT
Earn 100

Name two food materials which are preserved by using common salt.

Important Questions on Micro-Organisms: Friend and Foe

EASY
8th CBSE
IMPORTANT
Name two food materials which can be preserved by using sugar.
EASY
8th CBSE
IMPORTANT
Name two food materials which are usually preserved by deep freezing.
MEDIUM
8th CBSE
IMPORTANT
Name some of the preservatives which are used in the preservation of fruits as jams and jellies.
EASY
8th CBSE
IMPORTANT
Name some of the preservatives which are used in the preservation of fruits and vegetables as pickles.
EASY
8th CBSE
IMPORTANT
Name two food materials which can be preserved by using oil or vinegar.
MEDIUM
8th CBSE
IMPORTANT
Name any two special chemicals which are used as food preservatives.
MEDIUM
8th CBSE
IMPORTANT
Name the micro-organisms which can fix atmospheric nitrogen in the soil.
EASY
8th CBSE
IMPORTANT
What type of plants can fix nitrogen gas of the air into compounds of nitrogen?