Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?

Related Mcqs:

1. Compound containing two halogen atoms on two adjacent carbon atoms are called as ___________?

   A. Glycols
   B. Vicinal dihalides
   C. Geminal dihalides
   D. Diols

   Submitted by: Aamir khan Hullio

2. The melting points and boiling points upto meddle of 3d- series ____________________?

   A. increases
   B. decreases
   C. remain same
   D. no regular trend

3. The boiling point increases down the zero group element due to_________________?

   A. Ion dipole forces
   B. London forces
   C. Hydrogen bonding
   D. Dipole dipole forces

4. When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called_________________?

   A. ABAB (hexagonal)
   B. ABCABC (Cubic)
   C. Orthor hombic
   D. Rhombohedral

5. Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________?

   A. Covalent halides
   B. Electronegative halides
   C. Polymeric halides
   D. Polymeric hydrides

6. The molal boiling point constant is the ration of the elevation of boiling point to____________________?

   A. Molarity
   B. Molality
   C. More fraction of solvent
   D. Mole fraction of solute

7. In a molecule of carbon monoxide, what are the formal charges on the two atoms?

   A. Carbon=0, Oxygen=0
   B. Carbon= +1, Oxygen= -1
   C. Carbon= -1, Oxygen= +1
   D. Carbon=0, Oxygen= -1

   Submitted by: Muhammad Ali Kunbhar

8. In a group, atomic radii increase due to successive increase of _________ ?

   A. Electronic shells
   B. Proton shells
   C. Neutron shells
   D. Nucleus

   Submitted by: Rashid Mehmood

9. In unsaturated hydrocarbons electrons favour___________________?

   A. less reactivity
   B. addition reactions
   C. substitution reactions
   D. none

10. Across short period the melting and boiling point increase upto __________________?

    A. IIIA group
    B. IVA group
    C. VA group
    D. VIA group