List of top Science Questions

Write the main differences between stars and planets.
Which of the following is the beam of light coming from the Sun?
Which of the following is the imaginary (virtual) image formed in a convex mirror?
Which of the following is the mirror formula?
How does a virtual image look like?
Which of the following is a magnifying glass?
The chemical formula of bleaching powder is
The ratio of HCl and HNO$_3$ in aqua regia is
What is the role of decomposers in the ecosystem?
What is the meaning of biological evolution?
Draw a neat labelled diagram of the respiratory organs of human being.
Write the functions of liver.
What are the benefits of a dam?
Explain the importance of pH in daily life.
Write the names of endocrine glands found in humans.
What is the importance of blood platelets?
Write the names of some excretory substances of plants.
What should be done for water conservation and water management?
Write four main characteristics of living beings.
Why does continuous running cause cramps to a person’s muscles?
What do you understand by homologous series? Write with examples.
Why is sodium metal kept immersed in kerosene?
Describe a method to find the focal length of a convex lens.
What are aliphatic compounds?
Why does the colour of the solution change when a piece of iron is added to copper sulphate solution?