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CBSE->Std 8 Questions

Total Questions 1510
What are the uses of coal gas
What is bitumen
advantages and disadvantages of friction, kindly give me two examples for each
i have a seminar on topic "food preservation and how to consume it with care", my role is to give introductory speech on this subject. So help me out ?
What is destructive distillation
resources
my question is based on table 4.4 in page no 48 science text. sl. no 2, 3, 4, 5 is to filled up with name of the base and metal and name of the acid and non metal
Iron(Fe) + Oxygen(O2) + water(H2O) = ? Magnesium(Mg) + Oxygen(O2) = ?
whether copper is shiny or dull and very hard or not very hard?
whether sulphur is shiny or dull and hard or not very hard material?(reference table 4.1 in text)
what is the importance of cultural activities in a student's life?
how liquids exert pressure?
How can we kill the insects in a crop by not using pesticides?
is there any plastics that is biodegradable?
what is the format of formal and informal letter? give on example each.
I have a project in politics on the topic 'Fundamental Rights'.Can you please give some information about this topic.
is there any plastics that is biodegradable?
how is natural resources different from human made resources?
How can we kill the insects in a crop without any problem?
what is bus topology?