Saturated hydrocarbons will generally give ________.
Yellow flame
Green flame
Clean flame
Red flame
In which of the following tubes efferrescence will occur ?
P
Q
R
S
________ is the property of certain elements that occurs in different forms in nature with widely varying physical properties.
Allotropy
Isomerism
Isotopes
Isotones
The number of valence electrons in the nitrogen atom is ________.
1
3
5
7
Unsaturated hydrocarbons add hydrogen in the presence of catalysts such as palladium or nickel to give saturated hydrocarbon is an example of ________ reaction.
Addition
Substitution
Combustion
Burning
The unsaturated hydrocarbons which contain one or more double bonds are called ________.
Alkanes
Alkenes
Alkynes
Cycloalkane
________ is the first molecule in the homologous series of alkanes.
Methane
Ethane
Propane
Butane
Process of conversion of wood into coal by biochemical process taking over millions of years is called
Catenation
Carbonization
Pyrolysis
Destructive distillation
Most carbon compounds are ________ of electricity.
Conductors
Good conductors
Semiconductors
Non conductors
The molecular formula of ethane is ________.
CH4
C2H4
C2H6
C3H8