The periodic table is an arrangement of elements accordin...
The periodic table is an arrangement of elements according to their?
Oxidation number
Atomic number
Mass number
Number of neutrons
Correct answer is B
Elements are arranged in order of increasing atomic number
An atom of an element X gains two electrons. The symbol of the ion formed is ...
Chlorophyll obtained from green leaves of plant can be shown to be composed of more than one co...
If the volume of a given mass of gas at 298 K and pressure of 205.2 x 10\(^3\) Nm\(^{-2}\) ...
Which of the following statements best explains cracking ? It is a process ...
Which of the following substances with the corresponding pH value is an alkali? Substance pH ...
The most common type of chemical reaction which alkanes undergo is ...
Which of the following gases is used to retard the vaporization of the filament in a light bulb? ...