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

What is the common name of CaOCl2?

What is nuclear fission?
How does a light ray proceed in a lens? Show by a diagram.
What is the source of energy of the Sun?
Which of the following is an example of regeneration?
The tiger is a consumer of
The forelimbs of man, cat and bat are
The genic constitution of an individual organism is called
Bile juice is secreted by
Boron and aluminium belong to which group of elements in periodic table?
Carbon combines with hydrogen to form
$\mathrm{Fe_2O_3 + 2Al \rightarrow Al_2O_3 + 2Fe$ is which of the following types reaction?}
Which pigment makes the colour of urine yellow?
Bauxite is an ore of which of the following metals?
The correct order of reactivity of metals is
What is the atomic weight of oxygen?
The atomic number of potassium is 19. What is the valency?
What is the atomic number of fluorine?
A prism is bounded by how many surfaces?
What is the general formula of an alkane?
A solution turns red litmus into blue. The pH value of this solution would be:
What is the refractive index of diamond?
The magnification (m) in a concave lens is equal to:
The focal length of which mirror is taken as negative according to the convention of signs?
Where is the object placed to form a magnified virtual image in a concave mirror?