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

The general formula of an alkene is:
Which one of the following is a clean energy source?
The word 'Gene' was coined by:
Within which pH range does our body work?
Which of the following is the chemical formula of glucose?
The device which directly converts solar energy into electricity is:
Why is a rainbow colourful?
The absolute refractive index of air is actually:
Mirror used by ENT (Ear-Nose-Throat) doctor is:
Which of the following gases is used in welding?
The electromotive force of a cell is 1.5 V. The work done on passing a charge of 1 C will be:
The resistance of the filament of an electric bulb is 1200 ohms. How much electric current will the bulb draw from an electric source of 220 volts?
The radius of curvature of a concave mirror of focal length 20 cm is:
A white ray is incident obliquely on a glass slab. Which of the following will occur with the first refraction?
Wilting of leaves is due to which phytohormone?
Gibberellin is:
In plants, xylem is responsible for:
In a domestic electric circuit, the colour of neutral wire is:
In which device does the split ring act as a commutator?
The capacity to bend rays of light is called:
The image obtained by a concave lens is:
Androgen is secreted by the:
Style is part of:
Latex is found in:
Duodenum is a part of: