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

An example of a parasitic plant is:
Which of the following is the male gamete?
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?
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 one of the following is a covalent compound?
On moving from right to left across the period of the modern periodic table, the atomic size:
The molecular formula of ethane is C$_2$H$_6$. It has:
What is a food chain? Explain it with an example.
The chemical substance used as a cast for setting broken bones in surgery is:
Draw a labelled diagram of human digestive system and explain the digestive process of food.
When magnesium ribbon is ignited, the flame produced by it is:
Zn + CuSO$_4$ $\rightarrow$ ZnSO$_4$ + Cu, the above reaction is an example of:
What is the effect of deforestation on wildlife?
What is bio-magnification?
Explore the difference between blood and lymph.
What is external respiration?
Why do we sweat in summer?
What is photosynthesis? Write the equation of its chemical reaction.
What is the role of stomata and lenticels in respiration?
What is ascent of sap?
Write the importance of reproduction in living beings.