1) Chain aliphatic hydrocarbons are compounds consisting of ------
Carbon link in a close polygon
Carbon link in a triple chain
Carbon link in a single chain✓✓✓
Carbon link in a double chain

2) Isomerism is defined as tendency of a compound to have -------
Different molecular formula
Same molecular formula and   structural formula.
Same molecular formula but different structural formula.✓✓✓
Different molecular formula but same structural formula.

3) The numbers of valence election in the carbonation an alkane is ------
6
3
2
4✓✓✓

4) shrinking of a solid been heated is called -------
Sublimation
Decomposition
Sintering✓✓✓
Evaporation

5) Which of the following is not a member of saturated hydrocarbons?
Hexane
Cycloalkanes
Alkanes
Benzene✓✓✓

6) A pure solid melt sharply because ------
The force of cohesion between its particles are same
The force of attraction between its particles are the same✓✓✓
The force of attraction between its particles are different
The force of adhesion between its particles are different

7) Decomposition point is defined as ____
the temperature at which liquid is vaporized
The temperature at which a gas solidify
Melting temperature
the temperature at which a solid decomposes.✓✓✓

8) Sublimation is ------
change from liquid to solid
Recrystallization
Change from liquid to gaseous
Change from State of solid to gaseous ✓✓✓

9) CH3CH2CH2Cl. The compound is named/called ____
1-chloropropane✓✓✓
1-chloropropene
1-chlorobutane
1-chlorobutene.

10) The compound ICH2CH2 is called ___
2,2-di-iodoethane
Iodooethane
2-iodoethane
1,2-di-iodoethane✓