The molecule with linear structure is
H2O
SO2
CO2
O3
Graphite is soft because
It has three dimensional structure
It is black
It has layer structure
It has low density
The hardest material is
Charcoal
Graphite
Diamond
Rock
The formula of Chloroform is
CCl4
CHCl2
CHCl3
CH3Cl
The gas evolved due to Photosynthesis is
Hydrogen
Nitrogen
Oxygen
Chlorine
The general formula of alkanes is
CnH2n
CnH2n+2
CnH2n-1
CnH2n-2
Alkene used as anaesthetic is
Propene
Butene
Ethene
Octane
Polymer of ethylene is
PVC
Polythene
Bakelite
Teflon
Dry ice is
Crystal NaCl
Solid CO2
Liquid Nitrogen
The name of C8H18 is
Hexane
Propane
Methane
