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Chemistry - 9 Chapter - 6
State of Matter
Test - 2
1.
What is Covalent solid?
a) Covalent solid is a solid in which there exists a covalent bond between atoms.
b) Covalent solid is a solid in which there exists a covalent bond between molecules.
2.
What is covalent bond?
a) A chemical bond between two atoms created by the sharing of a pair of electrons
b) A chemical bond between three atoms created by the sharing of a pair of electrons
3.
What is Molecular solid?
a) A molecular solid is a solid which has Vander wall's forces present between its molecules.
b) A molecular solid is a solid which has Vander wall's forces present between its atoms.
4.
What are Vander walls forces?
a) Vander walls forces are intermolecular bonding forces.
b) Vander walls forces are intermolecule bonding forces.
c) Vander walls forces are interatom bonding forces.
5.
What are Cohesive forces?
a) Cohesive forces are forces of attraction present between the particles of solids
b) Cohesive forces are forces of attraction present between the particles of solid, liquid and a gas.
6.
Define Intermolecular forces?
a) The forces of attraction between the atoms of a compound.
b) The forces of attraction between the molecules of a compound.
7.
What are Dipole-dipole forces?
a) The forces of attraction which originate due to the difference in electro-negativities of the bonded atoms in polar molecules.
b) The forces of attraction which originate due to the difference in electro-positivities of the bonded atoms in polar molecules.
8.
What are polar molecules?..................
Two equal and opposite magnetized or electrically charged poles that are separated by a short distance having a permanent dipole, or having molecules with permanent -------.
a) bipoles
b) dipoles
9.
Define Hydrogen bonding?
When oxygen atom is attached to any one of fluorine, oxygen and nitrogen atoms, there appear strong dipole forces which are called -------- bonding.
a) oxygen
b) hydrogen
10.
Generally the material particles have ____ types of movement.
a) 2
b) 3
c) 4
d) 5
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