List of top Science Questions asked in Bihar Board Class X Exam

What is the difference between menarche and menopause?
What are renewable and non-renewable sources?
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
Write the functions of liver.
Draw a neat labelled diagram of the respiratory organs of human being.
What is the meaning of biological evolution?
What is the role of decomposers in the ecosystem?
Why does continuous running cause cramps to a person’s muscles?
What should be done for water conservation and water management?
What is the importance of blood platelets?
Write four main characteristics of living beings.
Explain the importance of pH in daily life.
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?
What are aliphatic compounds?
Why is sodium metal kept immersed in kerosene?
What are acids? Give any two examples. Explain the effect of an acid on an indicator.