List of top Science Questions asked in Bihar Board X

The valency of all elements in a group of the periodic table is:
The most effective color of visible light spectrum for photosynthesis is:
The number of pairs of autosomes in humans is:
Open circulatory system is found in:
The carrier of oxygen in blood is:
The atomic number of gold is:
The tiger is a consumer of:
The place of origin of humans is:
The expulsion of water through stomata in the form of vapour from the aerial part of the plant is known as:
Peristalsis movement is found in:
Which of the following is a salt?
Which of the following metals has the lowest melting point?
Which is the conventional source of energy?
The maximum number of electrons in a shell is:
The amount of light entering the human eye is controlled by:
Which hydrocarbon is the simplest compound?
Kilowatt-hour (kWh) is the unit of:
An example of a bisexual organism is:
Vegetative propagation in potato takes place by:
An example of plant hormone is:
Hydrilla is found:
Systolic blood pressure of a healthy person is:
In fish, respiration takes place through:
Why is the colour of some clouds white?
The radius of curvature of the lens of an eye is controlled by: