Y
Z
Y - Z
Z - Y
Correct answer is B
The chemical properties of elements depend on their atomic numbers. The atomic number is represented by Z.
An organic compound containing 40.1% carbon and 6.6% hydrogen has an empirical formula of? ...
The preferential discharge of ions during electrolysis is influenced by the ...
An emulsion paint consists of ? ...
When ethanol is heated with excess concentrated sulphuric acid, the ethanol is? ...
Which of the following pairs has compounds that are isomers? ...
Which of the following substances is mainly responsible for the depletion of the ozone layer? ...
The flame used by welders in cutting metals is ...
In which of the following are water molecules in the most disorderly arrangement? ...
Which of the following apparatus is NOT used in volumetric analysis? ...