Table salt crystallizes with a______________________?
A. Face centered cubic lattice
B. body centered cubic lattice
C. simple cubic lattice
D. othorhombic lattice
Submitted by :- Jamil Ahmed
CHEMISTRY
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Vapour pressure is not affected by_______________?
A. Surface area
B. temperature
C. intermolecular forces
D. atmospheric pressure
Submitted by :- Jamil Ahmed
The attractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________?
A. Dipole-dipole forces
B. Ion dipole-dipole forces
C. London dispersion forces
D. Debye forces
Submitted by :- Jamil Ahmed
Formation of vapours from the surface of a liquid is called________________?
A. vapourization
B. evaporation
C. condensation
D. cracking
Submitted by :- Jamil Ahmed
Which one is a conductor but is not malleable ?
A. Iron
B. Graphite
C. Silver
D. Platinum
Submitted by :- Jamil Ahmed
Which one of the following does not show hydrogen bonding?
A. Water
B. Ethyl alcohol
C. Phenol
D. Diethyl ether
Submitted by :- Jamil Ahmed
Which one is false for evaporation ?
A. Surface phenomenon
B. Continuous
C. Exothermic
D. Cause cooling
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
Which has strongest bonding in the solid state ?
A. Hydrogen Chloride (HCI)
B. Chlorine (Cl2)
C. Xenon(Xe)
D. Sodium Chloride (NaCI)
Submitted by :- Jamil Ahmed
All the enthalpy changes are________________?
A. Negative
B. Positive
C. May or may not be A or B
D. none
Submitted by :- Jamil Ahmed