List of top Questions asked in Bihar Board X - 2023

The upper part of a box-type solar cooker has a glass cover. The reason for this is:
Which is used in Solar cells?
Which of the following is used as wine?
The electronic configuration of an element is 2,8,7. What is the atomic number of the element?
The molecular formula of sodium phosphate is:
Duralumin is an alloy of which metal?
What is the number of elements in the third group of the periodic table?
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 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:
The place of origin of humans is:
The tiger is a consumer of:
Which of the following is a salt?
The atomic number of gold is:
Which hydrocarbon is the simplest compound?
The maximum number of electrons in a shell is:
Kilowatt-hour (kWh) is the unit of:
Which is the conventional source of energy?
Which of the following metals has the lowest melting point?
The amount of light entering the human eye is controlled by:
Vegetative propagation in potato takes place by: