List of top Questions asked in Bihar Board Class X Exam

In fish, respiration takes place through:
The radius of curvature of the lens of an eye is controlled by:
Why is the colour of some clouds white?
The SI unit of resistance is:
Depletion of ozone layer is due to:
In which of the following organisms does asexual reproduction occur through budding?
On moving from focus towards the pole, the magnification in a concave mirror:
Which energy does a hydro-electric power plant convert into electric energy?
A rectangular coil of copper wire is rotated in a magnetic field. The direction of the induced current in the coil changes after:
The image of an ant in a concave mirror is erect and goes on increasing as the ant moves along the principal axis. The direction of motion of the ant is:
The magnification produced by a concave mirror of focal length 10 cm is positive, if the value of object distance is:

The alloy consisting of 90% Cu and 10% Sn is named as

What is the common name of CaOCl2?

What is nuclear fission?
How does a light ray proceed in a lens? Show by a diagram.
The tiger is a consumer of
Bile juice is secreted by
The forelimbs of man, cat and bat are
Which of the following is an example of regeneration?
The genic constitution of an individual organism is called
What is the source of energy of the Sun?
Bauxite is an ore of which of the following metals?
The correct order of reactivity of metals is
$\mathrm{Fe_2O_3 + 2Al \rightarrow Al_2O_3 + 2Fe$ is which of the following types reaction?}
Carbon combines with hydrogen to form