List of top Science Questions

Why does continuous running cause cramps to a person’s muscles?
What is the importance of blood platelets?
Write the names of some excretory substances of plants.
What are aliphatic compounds?
Describe a method to find the focal length of a convex lens.
What do you understand by homologous series? Write with examples.
Why is it necessary to keep the plaster of Paris away from moisture? Explain.
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?
What is fossil fuel? Write with example.
What is electric current? Write its equation and unit.
What is nuclear fusion?
Why does the coin placed in water appear raised?
How does an electromagnet work?
Describe Oersted's experiment to show that a magnetic field is produced around a current carrying conductor wire.
Hormone that stops cell division in plants is called
What is light beam? How many types of it are there?
Testosterone is secreted by
Which excretory substance is mainly released from acacia plants?
Which is the largest part of the human brain?
The male reproductive organ of a flower is called
How many pairs of respiratory pores are found in a cockroach?
How do protozoans expel excretory substances?