Automobile Engineering in ME
The main characteristics of a maintenance free (MF) battery is that

A maintenance free battery has a relatively short shelf life when compared with standard batteries
Since it is sealed, the water in maintenance free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water
Recharging of a maintenance free battery is neither required nor possible
A maintenance free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid

ANSWER DOWNLOAD EXAMIANS APP

Automobile Engineering in ME
The composition of the electrolyte in a fully charged battery is that

The electrolyte is pure distilled water
The electrolyte is pure sulphuric acid
The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight
The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Automobile Engineering in ME