List of practice Questions

Double-helix structure of DNA as proposed by Watson and Crick.
Define oncogenes and name one disease caused by their activation.
Why is the Amazon rainforest called the "lungs of the earth"?
Differentiate between microsporogenesis and megasporogenesis.
Penicillin is obtained from a fungus named _____.
The number of hydrogen bonds between adenine and thymine is _____.
What is the full form of GEAC?
On which island group did Darwin observe finches?
What is the name of the method for detecting genetic disorders during pregnancy?
In Tuberculosis the Patient is given the diet -
Which gas is used to disinfect water?
The disease spread by air is –
How many ribs are there in the human body?
Formula H₂O is of the chemical compound –
What do you understand by home decoration? What things should be kept in mind decorating the house?
What is meant by family expenditure? Explain the factors affecting family expenditure.
What do you mean by fomentation? How many types of it are there? Describe any method.
What do you understand by food poisoning? What about the factors causing food poisoning?
What is natural respiration? What is the difference between natural and artificial respiration?
Write four causes of environmental pollution.
Write the advantages of saving.
What are the differences between dysentery and diarrhoea?
How many types of scissors are there? What is its use?
How many types of road signs are there?

What is an ideal kitchen?