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

Magnesium is a member of which group of the periodic table ?
Which of the following reactions is an example of decomposition reaction ?
In which state is the Kalpakkam Nuclear Power Plant located ?
Which phenomenon exhibited by light is demonstrated in the twinkling of stars ?
Which type of reaction is respiration ?
Compounds formed by transfer of electrons are called
The two non-renewable sources of energy are
The main component of domestic gas (LPG) is
Which type of mirror is a concave mirror ?
Which of the following types of mirror is used in the headlight of a car ?
The focal length of a concave mirror is
Which mirror always forms an image smaller than the object?
The speed of light in air as compared to vacuum is
The light rays travel in
A group of rays is called
Which of the following is saturated hydrocarbon ?
The valency of carbon in organic compounds is
IUPAC name of ethylene is
Which was a defect of Mendeleev's periodic table ?
Who among the following propounded the laws of octave ?
Which of the following compounds would be the most basic ?
The chemical which shows biomagnification is
The genetic structure of an organism is called
Primary consumers are called
The shape of methane molecule is