Please capitalize where necessary: spanish, swiss, british, granny
A: Spanish, Swiss, British, granny

Please capitalize where necessary: petrol, diesel oil, heating oil lubricants and heavy fuel oil are some of the oil products that throughout the last 100 years have been used for transport, heating and in industry.
A: Petrol, diesel oil, heating oil lubricants and heavy fuel oil are some of the oil products that throughout the last 100 years have been used for transport, heating and in industry.

Please capitalize where necessary: operating on battery: yes
A: Operating on battery: yes

Please capitalize where necessary: some scholars have approved of heron's practical skills as a surveyor but claimed that his knowledge of science was negligible.
A:
Some scholars have approved of Heron's practical skills as a surveyor but claimed that his knowledge of science was negligible.