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 … [Read more...] about Nitrogen Cycle
Micro-organism:Friend and Foe
Nitrogen Fixation
Question 1 Name the micro-organism which can fix atmospheric nitrogen in the soil? Question 2 What type of plants can fix nitrogen gas of the air into compounds of nitrogen? Question 3 Name the micro-organism present in the soil and in the root nodules of leguminous plants? Question 4 Where do Rhizobium live? Question 5 What is the function of Rhizobium … [Read more...] about Nitrogen Fixation
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 … [Read more...] about Preservation of Food by Mustard oil and Vinegar, Chemicals, Pasteurisation, Air-tight packets
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? NCERT … [Read more...] about Preservation by Sun-Drying, Heating, Cooling
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 How do you preserve food by … [Read more...] about Preservation by Deep Freezing, Common Salt, Sugar