List of top Science Questions asked in Bihar Board Class X Exam

In human beings, nasal cavity, larynx, trachea, and lungs combine to form:
Which of the following is the unit of power of lens?
Which mirror is used as a shaving mirror?
If the image of an object formed by a concave mirror is virtual, erect, and larger than the object, then where should be the location of the object?
Most of the refraction of the light rays entering the eye occurs at:
Which of the following lenses is used to remove short-sightedness?
What type of lens is found in the human eye?
The functional group \textbf{Functional group} \(\>\)CO is called:
How many structural isomers of pentane, having molecular formula C$_5$H$_{12$, are possible?}
Which of the following metals is the most ductile?
A metal reacts with oxygen to form a compound with a high melting point. This compound is soluble in water. Which of the following elements can it be?
Malachite is an ore of which metal?
The process of coating a layer of zinc on iron is called:
Which of the following acids is found in vinegar?
Which hormone is secreted from the pancreas?
The change in body that occurs during adolescence is due to:
The body is balanced by the organ:
The chemical formula of chalk is:
Binary fission is found in:
Which among the following is responsible for clotting of blood?
Which type of nitrogenous wastes is excreted by living organisms?
What is present in cathode rays?
Iodized salt is:
What is the chemical name of Plaster of Paris?
Which of the following is the male gamete?