List of top Questions asked in Bihar Board X - 2025

Why have detergents replaced soap ?
What are fossil fuels ?
What do you understand by short and long periods of periodic table ?
What is energy crisis ? Mention the measures to resolve it.
What do you understand by electromagnetic induction ?
Why is inert gas filled in electric bulb ?
What do you understand by potential difference ?
What is called the best source of energy ?
What is dynamo ? What is its use ?
What are defects of vision ? What are their types ? How are the defects resolved ?
Describe the structure and working method of a biogas plant.
Write three information obtained from chemical equation.
Why is an aqueous solution of sodium carbonate alkaline ?
Which of the following is a renewable resource ?
Which of the following is the main component of biogas ?
Peptic ulcer can be caused by
Why do planets not twinkle ? Explain.
What is farsightedness ?
In which of the following is tartaric acid found ?
What is the chemical name of slaked lime ?
Magnesium is a member of which group of the periodic table ?
How many periods are there in the periodic table ?
Which of the following is not an ancient method of water harvesting?
What was the objective of construction of Tehri Dam ?
What is the new concept of waste management ?