Marsh gas is
A). Nitrogen
B). Ethane
C). Methane
D). Hydrogen
Permanent hardness of water can be removed by adding:
A). Chlorine
B). Washing Soda
C). Potassium Permanganate
D). Bleaching Powder
In fireworks, the green flame is produced because of
A). Sodium
B). Barium
C). Mercury
D). Potassium
Diamond is an allotropic form of:
A). Germanium
B). Carbon
C). Silicon
D). Sulphur
The filament of an electric bulb is made of
A). Tungsten
B). Nichrome
C). Graphite
D). Iron