A compound gives an orangered colour to non-luminous flame. This compound is likely to contain
Na+
Ca2+
Fe3+
Fe2+
Stainless steel is used for making
magnets
tools
coins and medals
moving parts of clocks
The residual solids from the fractional distillation of petroleum are used as
coatings of pipes
raw materials for the cracking process
fuel for the driving tractors
fuel for jet engines
4 - ethyloctane
5 - ethyloctane
5 - propylheptane
3 - propylheptane
Which of the following is used as fuel in miners' lamp?
Ethanal
Ethyne
Ethene
Ethane