PPSC Chemistry Part I Physical Chemistry Online Test With Answers

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PPSC Chemistry Part I Physical Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following has the highest lattice energy LiCl NaCl KCl CaCl
2 The number of vibrational degree of freedom for CO2 is 2 3 4 5
3 Which of the following should have the largest dipole moment. Carbon tetrachloride Cis-stibeue Trans-atibeue Cis-dichlorocthylene
4 Which of the following regions of the spectrum would be used to determine the structure of the crystalline solids. Microwave X-rays Visible Infrared
5 Which substance has the greatest lattice energy. CuBr MgO KI NaF
6 Which of the following is not true for metalloids. They are borderline elements They usually act as electron during with non metals. B, Si, and Ge They are all solids at room temperature.
7 Layer of the C -atom in graphite are hold together by Covalent bonds Free electrons Ionic bond Van Dar Waals forces
8 The height to which a liquid will rise in an open capillary tube is inversely proportional to. Temperature of the liquid Surface tension Density of the liquid Air pressure
9 Brass is an alloy of Copper and tin Copper and zinc Aluminium and nickel Leed and tin
10 The addition of As to Ge makes the latter a Metallic conductor Ionic conductor Intrinaic conductor Extrinsic semiconductor
11 When SI is dipped with As, it becomes Superconductor p-type conductor N-type conductor None of these
12 The phenomenon of x-ray diffraction was studied by Huygen Bragg Max Planck None of above
13 Which of the following type of lattice has maximum numb of atoms per unit cell. Simple cubic Body centred cubic Face centred cubic All of them
14 Which of the following statement is incorrect about rock salt type It has for arrangement of Na+ Na+ and Cl- ions have coordination number of 6:6 A unit cell of NaCl metals have rock salt type structure. None of them
15 The co ordination number of atoms in a hexagonal closed packed structure is 2 6 12 4
16 Out of seven crystal system, how many can have body centered unit cell. 3 4 2 7
17 The total number of crystal systems and the number of Bra via is lattices are. 7,7 7,14 14,7 14,28
18 Which of the following has cubic structure. Sodium chloride Potassium Chloride Diamond All of above
19 Which of the following has hexagonal structure. Sodium chloride Potassium choride Diamond Graphite
20 The unit cell having dimensions, a = b=c, alpha = beta= gama not equal 90 o is known. Cubic Trigonal Tetragonal Monoclinic
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