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

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

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Automobile Engineering in ME
The crankcase dilution means

Dilution of oil by water in the crankcase
Dilution of lubrication oil by fuel in the crankcase D. Dilution
Dilution of mixture passing through crankcase in two stroke engines
Dilution of fuel in the crankcase

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