List of top Questions asked in Bihar Board X - 2023

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:
The chemical formula of chalk is:
Binary fission is found in:
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:
Which among the following is responsible for clotting of blood?
Which type of nitrogenous wastes is excreted by living organisms?
Iodized salt is:
What is the chemical name of Plaster of Paris?
What is present in cathode rays?
Which of the following is the male gamete?
Which mode of nutrition is found in fungi?
An example of a parasitic plant is:
Which one of the following is a covalent compound?
The commercial production of ethyl alcohol is done by which chemical process?
An aqueous solution of ammonium chloride is:
What is the chemical formula of quicklime?
Which of the following is a good conductor of electricity?
The atomic number of magnesium is 12. What is its valency?
Which of the following metals is displaced from its salt solution by iron?