Epoxy is ………..
a) polymer
b) resins
c) hardeners
d) all of these
Epoxy adhesives are also called ……….
a) non structural adhesives
b) structural adhesives
c) isomers
Epoxy adhesives are ……..
a) heat resistant
b) chemical resistant
c) a & b both
d) none of these
The adhesive action of paints and dyes is developed due to ………….
a) ionic bonding
b) hydrogen bonding
c) metallic bonding
d) all of these
Hydrogen bond is stronger than ………….
a) covalent bond
b) Dipole-dipole forces
c) ionic bond
d) all of these
Which bond is directional?
a) Ionic bond
b)coordinate covalent bond
c) hydrogen bond
d) metallic bond
Explanation:Directional bonds are the one where a specific oriental direction of atoms is necessary. It is the distortion of electron density towards a particular atom in a given bond. All the covalent bonds are directional bonds in nature. Covalent bonds are formed by the sharing of electrons.
