Category Archives: Micro-organism:Friend and Foe

Nitrogen Cycle

Question 1 Explain nitrogen cycle in atmosphere? Question 2 Define nitrogen cycle? NCERT Solutions Class 8 Science Nitrogen Cycle Nitrogen is required by both,plants and animals for their growth and development. It is an essential component of proteins which make up the bodies of plants and animals. It is also present in chlorophyll,nucleic acid and vitamins. The circulation… Read More »

Preservation of Food by Mustard oil and Vinegar, Chemicals, Pasteurisation, Air-tight packets

Question 1 Name food material which are preserved by mustard and vinegar? Question 2 Name food material which are preserved by using chemicals as preservatives? Question 3 Name food material which are preserved by pasteurisation? Question 4 Name food material which are preserved in air-tight packets? Question 5 Name some preservatives which are used in the preservation of fruits as jam… Read More »

Preservation by sun-drying,heating,cooling

Question 1 Name food material which can be preserved by heating? Question 2 Name food material which can be preserved by cooling? Question 3 Name food material which can be preserved by sun-drying? Question 4 How do you preserve food by heating? Question 5 How do you preserve food by cooling? Question 6 How do you preserve food by dehydration?… Read More »

Preservation by Deep freezing,common salt,sugar

Question 1 Name food material which can be preserved by using sugar? Question 2 Name food material which can be preserved by using common salt? Question 3 Name food material which can be preserved by deep freezing? Question 4 How do you preserve food by deep freezing? Question 5 How do you preserve food by using common salt? Question 6… Read More »