List of top Questions asked in Bihar Board Class X Exam

The electronic configuration of an element is 2,8,7. What is the atomic number of the element?
Duralumin is an alloy of which metal?
The molecular formula of sodium phosphate is:
The most effective color of visible light spectrum for photosynthesis is:
The valency of all elements in a group of the periodic table is:
Open circulatory system is found in:
The carrier of oxygen in blood is:
The number of pairs of autosomes in humans is:
The atomic number of gold is:
Which of the following is a salt?
The expulsion of water through stomata in the form of vapour from the aerial part of the plant is known as:
The tiger is a consumer of:
The place of origin of humans is:
Peristalsis movement is found in:
Kilowatt-hour (kWh) is the unit of:
The amount of light entering the human eye is controlled by:
Which is the conventional source of energy?
The maximum number of electrons in a shell is:
Which hydrocarbon is the simplest compound?
Which of the following metals has the lowest melting point?
An example of plant hormone is:
Vegetative propagation in potato takes place by:
Hydrilla is found:
Systolic blood pressure of a healthy person is:
An example of a bisexual organism is: