Dry ice is
Crystal NaCl
Solid CO2
CO2
Liquid Nitrogen
The formula of Dimethyl ether is
C2H5 - O - CH3
C2H5 - O - C2H5
CH3 - O - CH3
C2H5 - O - C3H6
The white precipitate formed when CO2 is passed through lime water is
Calcium oxide
Calcium carbonate
Calcium sulphate
Calcium phosphate
Washing soda is
Sodium carbonate
Sodium bicarbonate
Sodium hydroxide
Sodium oxide
Carbon dioxide dissolves in water to give
Carbolic acid
Hydrochloric acid
Boric acid
Carbonic acid
Combustion of methane gives
O2
H2
N2
Calcium carbide on hydrolysis gives
Ethene
Ethyne
Ethane
Benzene
The byproduct obtained in the manufacture of alcohol is
Oxygen
Hydrogen
Carbon
Carbon dioxide
The hydrocarbon used in welding is
Methane
Acetylene
The Refractive index of Carbon is
4.3
2.45
4.5
5.42