List of top Science Questions

Write four main characteristics of living beings.
What should be done for water conservation and water management?
Explain the importance of pH in daily life.
Why does continuous running cause cramps to a person’s muscles?
What is the importance of blood platelets?
Write the names of endocrine glands found in humans.
Write the names of some excretory substances of plants.
What are the benefits of a dam?
Why is it necessary to keep the plaster of Paris away from moisture? Explain.
Describe a method to find the focal length of a convex lens.
What are aliphatic compounds?
What do you understand by homologous series? Write with examples.
What are acids? Give any two examples. Explain the effect of an acid on an indicator.
Why is sodium metal kept immersed in kerosene?
Why does the colour of the solution change when a piece of iron is added to copper sulphate solution?
Which metallic property does graphite exhibit despite being a non-metal?
How does an electromagnet work?
What is electric current? Write its equation and unit.
What is nuclear fusion?
Why does the coin placed in water appear raised?
Describe Oersted's experiment to show that a magnetic field is produced around a current carrying conductor wire.
What is fossil fuel? Write with example.
Testosterone is secreted by
The male reproductive organ of a flower is called
Which excretory substance is mainly released from acacia plants?