List of top Science & Technology Questions

Name the type of bond in the formation of chlorine molecule.
Draw the electron dot structure of a chlorine molecule.
Write the molecular formula of chlorine.
Name the defect of eye vision in which the focussing power of eye lens decreases with age.
What is the number of electrons in the valence shell of chlorine?
Write the electronic configuration of chlorine.
Name the capacity of the eye lens to change its focal length as per need.
Give two examples in which this process is used.
What is the minimum distance of distinct vision for a normal human eye?
Name the process shown in the diagram.
The non-metallic substance which is a good conductor of electricity.
How does this process take place?
The two metals which can be cut with knife.
A sound is produced when certain metals are struck. Name this property of metals.
What does a small droplet of water act as?
Name any two natural processes involved in formation of rainbow.
What happens when copper reacts with concentrated nitric acid? What is the colour of the gas released during the reaction?
Write its balanced chemical equation.
Write the names of reactants and products.
The atom having smallest atomic mass.
The noble gas with the smallest atomic radius.
What is meant by decomposition reaction? Write the chemical reaction of decomposition of sugar on heating.
The most electronegative atom.
Time taken by the ball to reach the ground.
Velocity of the ball on reaching the ground.
Name the launcher.
Name the law on which its working is based.