List of top Questions asked in Bihar Board X - 2025

Which blood group is known as universal donor?
Blood is
How do protozoans expel excretory substances?
The process of purification of blood by dialysis machine is called
How many pairs of respiratory pores are found in a cockroach?
The flow of blood in the heart is
Which of the following is a vestigial organ in the human alimentary canal?
By which method is water absorbed by root hairs?
Which of the following is the commercial unit of electrical energy?
The length of the small intestine in herbivorous animals is
The condition of high blood pressure is called
The completely digested food in the small intestine is called
Which of the following is the formula to find the resistance of a coil?
Which lens is used in nearsightedness (myopia)?
The SI unit of resistance is
Which of the following controls the size of the pupil?
How many colours are there in white light?
Which colour of white light bends the least after passing through a prism?
Which of the following is an allotrope of carbon?
In which lens can both real and virtual images be formed?
The ratio of nitrogen and hydrogen atoms in one molecule of ammonia is
What type of salt is Pb(OH)NO$_3$?
An alloy of mercury and another metal is called
Which of the following is the most acidic oxide?
Which of the elements represented by the following symbols is a metal?