A. Negative
B. Positive
C. May or may not be A or B
D. none

A. 0 atmosphere
B. one atmosphere
C. 2 atmosphere
D. 10 atmosphere

A. Same physical and chemical properties
B. Same physical and different chemical properties
C. Different physical and same chemical properties
D. Different physical and chemical properties

A. Sulphur
B. Carbon
C. Silica
D. Tin

A. Isomorphism
B. Polymorphism
C. Anisotropy
D. Allotropy

A. More strength of H-bonding
B. More strength of London forces
C. Less polarizability
D. All of the above

A. No definite geometry
B. No definite heat of fusion
C. No sharp melting points
D. All of the above

A. Atoms
B. Ions
C. Molecules
D. A, B, and C

A. increase
B. remains constant
C. decrease
D. there will be no boiling

A. Diethyl ether
B. Ethyl alcohol
C. Water
D. Ethylene glycol