Which has strongest bonding in the solid state ?
(A) Hydrogen Chloride (HCI)
(B) Chlorine (Cl2)
(C) Xenon(Xe)
(D) Sodium Chloride (NaCI)
All the enthalpy changes are________________?
(A) Negative
(B) Positive
(C) May or may not be A or B
(D) none
The pressure during the molar heat of fusion is kept________________?
(A) 0 atmosphere
(B) one atmosphere
(C) 2 atmosphere
(D) 10 atmosphere
Isomorphic substances have _______________?
(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
The phenomenon in which a compound exists in two or more crystalline forms is called ________________?
(A) Isomorphism
(B) Polymorphism
(C) Anisotropy
(D) Allotropy
Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?
(A) More strength of H-bonding
(B) More strength of London forces
(C) Less polarizability
(D) All of the above
Amorphous substances posses_________________?
(A) No definite geometry
(B) No definite heat of fusion
(C) No sharp melting points
(D) All of the above
Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it ?
(A) Liquid do not have definite shape
(B) Liquid do not have definite volume
(C) Lieuid is highly compressible
(D) Liquid molecules can slide over each other
The number of formula units in 29.25g of common salt_________________?
(A) 6.022 x 1023
(B) 3.01 x 1023
(C) 2 x NA
(D) 4 x 6.022 x 1023