List of top Science Questions asked in Bihar Board X

The colour of chlorophyll pigment is:
The hardest part of the teeth is:
Which of the following is necessary in the synthesis of thyroxine hormone?
Which is an example of a decomposer?
Which of the following is/are a part of environment?
Which is the main source of energy on earth?
Which one of the following proteins is responsible for the red colour of blood?
Dispersion of white light is produced by:
Which one of the following is a strong base?
What is the chemical formula of dry ice?
The device which directly converts solar energy into electricity is known as:
The actual source of energy of fossil fuel is:
Those which 'produce heat on combustion' are called:
Euro-II is related to:
Which of the following is a non-renewable source of energy?