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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
The pressure during the molar heat of fusion is kept________________?
A. atmosphere B. one atmosphere C. 2 atmosphere D. 1 atmosphere Submitted by :- Jamil Ahmed
Isomorphic substances have _______________?
A. Same physical and chemical properties B. Same physical and different chemical properties C. Different physical and same chemical properties…
Bucky balls is an allotropic from of__________________?
A. Sulphur B. Carbon C. Silica D. Tin Submitted by :- Jamil Ahmed
The phenomenon in which a compound exists in two or more crystalline forms is called ________________?
A. Isomorphism B. Polymorphism C. Anisotropy D. Allotropy Submitted by :- Jamil Ahmed
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. Liquid is highly compressible D.…
The number of formula units in 29.25g of common salt_________________?
A. 6.22 x 10^23 B. 3.1 x 10^23 C. 2 x NA D. 4 x 6.22 x 10^23 Submitted by…