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

If the lower half of a concave mirror gets broken, then the image:
When a ray of light travels from air (a rarer medium) to glass (a denser medium), it bends:
Ozone layer protects earth from which harmful radiation?
Which one of the following is the natural source of oxalic acid?
Which colour of light scatters more in the atmosphere?
What will be the nature of the image of an object, if the magnification of the image is negative?
How many laws are there for the reflection of light?
A ray of light is incident perpendicular to a plane mirror. The angle of reflection will be:
Converging lens in air is:
The general formula of alkyne is:
The far point for normal vision is:
How many bonds are there between two atoms in a nitrogen molecule?
What is the colour of silver iodide?
Zinc blende is an ore of which metal?
How many crystalline allotropes of carbon are there?
The hardest natural substance is:
The smallest endocrine gland is:
All acids dissolve in water to give:
Which of the following compounds is a weak acid?
Which of the following has the fastest heartbeat?
Which of the following is cellular fuel?
How many phosphates are there in ATP?
Which of the following is not an excretory organ of humans?
The frequency of alternating current in household electric circuit is:
A simple prism is bounded by how many surfaces?