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

Which one of the following is a clean energy source?
The process of coating a layer of zinc on iron is called:
The general formula of an alkene is:
The chemical formula of Chalk is:
Which of the following metals is the most ductile?
A metal reacts with oxygen to form a compound with 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 functional group \( >CO \) is called:
How many structural isomers of pentane, having molecular formula \( C_5H_{12} \) are possible?
Which of the following is necessary to obtain nuclear energy?
The maximum value of magnification in a convex mirror is
Out of a combination of resistors, one resistor is removed and it is found that the net resistance has increased. The resistor was connected in
Two appliances rated as (60 W, 200 V) and (40 W, 200 V) are connected across a 100 V supply in a room. The total power consumed is
Which of the following expressions represent(s) electric power in the circuit?
Potential difference is measured by
Which of the following statements is true?
Which of the following substances is a conductor?
Which disease is related to the respiratory system?
Which part of food is digested in the buccal cavity?
Blood pressure is controlled by which of the following?
The sugar level in blood is controlled by which of the following?
Which is the longest cell in the human body?
Pollen grains are formed in which of the following?
In which of the following binary fission does not occur?
Which one of the following is a clean energy source?