1) In sp3 hybridization the expected geometry of molecules will be__________________? a. square planar b. trigonal pyramidal c. tetrahedral d. linear
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2) In cyano group the carbon atom shows which kind of hybridization___________________? a. sp2 b. sp c. sp3 d. none of the above
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3) the fractional distillation of petroleum produces gasoline up to ________________? a. 10% b. 15% c. 20% d. 30%
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4) Which is not heterocyclic compound _______________? a. Furan b. Thiophene c. Aniline d. Pyridine
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5) Which one is not state function ________________? a. Internal energy b. Enthalpy c. Gibbs free energy d. Work
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6) If internal energy of the system is increased ____________________? a. Change in state of the system is increased b. Temperature of the ystem may rise c. Chemical reaction may take place d. All
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7) A reaction has values of ?H and ?S which are both positive. The reaction __________________? a. Is spontaneous b. Spontaneity is temperature dependent c. Has an increasing free energy d. Is non-spontaneous
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8) The environment in which a system is studied is __________________? a. State function b. phase c. surrounding d. state
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9) Anything which depends upon initial and final state of a system is_______________? a. environment b. surrounding c. state function d. enthalpy
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10) Reaction in which heat evolves is called ____________________? a. endothermic b. spontaneous c. non-spontaneous d. exothermic
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11) Pumping of water uphill is_______________? a. spontaneous process b. non-spontaneous process c. irreversible process d. reversible process
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12) Which one of the following is a state function ________________? a. pressure b. temperature c. enthalpy d. all of the above
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13) Enthalpy of a reaction can be measured by ____________________? a. glass calorimeter b. manometer c. Barometer d. thermometer
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14) Most of thermodynamic parameters are_________________? a. system b. surrounding c. phase d. state functions
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15) Two fundamental ways to transfer energy are________________? a. pressure and temperature b. pressure and volume c. heat and work d. heat and volume
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16) Enthalpy change can be_________________? a. calculated by Hess law b. can be measured by calorimeter c. both A and B d. none
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17) Enthalpy of combustion for food fuel and other compounds can be measured accurately by________________? a. glass calorimeter b. bomb calorimeter c. thermometer d. manometer
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18) When enthalpy of reactants is higher than product then reaction will be_________________? a. endothermic b. spontaneous c. non-spontaneous d. exothermic
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19) State function the macroscopic property of system depends upon________________? a. path of reaction b. initial state c. final state d. initial and final state
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20) CuSO4 + Zn?ZnSO4+Cu is___________________? a. Spontaneous reaction b. Non-spontaneous reaction c. Endothermic d. Exothermic
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21) Total energy of a system is_________________? a. P.E + K.E b. P.E + heat energy c. K.E + heat energy d. P.E + mechanical energy
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22) Unit of heat in SI system is________________? a. J b. KCaL c. Cal d. GJ
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23) ________________ is study about energy of a chemical system ? a. thermochemistry b. thermodynamics c. chemical kinetics d. stoichiometry
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24) Which of the following has strongest intermolecular forces of attraction ? a. Hydrogen (H2) b. Chlorine (Cl2) c. lodine (I2) d. Methane (CH4)
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25) When substance moves from a solid to a liquid state all of the following changes occur except__________________? a. Molecules become more disordered b. K.E of the molecules decreases c. Intermolecular forces become weaker d. Molecule become further separated
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26) In order to mention the boiling point of water at 110°C the external pressure should be ? a. Between 760 torr and 1200 torr b. Between 200 torr and 760 torr c. 765 torr d. any value of pressure
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27) Vapour pressure of water at 100°C is___________________? a. 55 mm Hg b. 760 mm Hg c. 355 mm Hg d. 1489 mm Hg
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28) Liquid crystal is discovered by __________________? a. William Crooks b. Fredrack Reinitzer c. J.J Thomson d. Bravis
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29) Hydrogen bonding is involved in____________________? a. Solubility b. Cleansing action of detergents c. Biological molecules d. All
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30) Forces of attraction which may be present between all kinds of atoms and molecules are _____________________? a. intramolecular b. intermolecular c. van der Waal d. Dipole-induced dipole
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31) The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________? a. vaporization b. evaporation c. crystallization d. sublimation
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32) Water has maximum density at __________________? a. 0°C b. 2°C c. 4°C d. 100°C
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33) Formation of vapours from the surface of a liquid is called________________? a. vapourization b. evaporation c. condensation d. cracking
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34) The ttractive 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
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35) Vapour pressure is not affected by_______________? a. Surface area b. temperature c. intermolecular forces d. atmospheric pressure
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36) Table salt crystallizes with a______________________? a. Face centered cubic lattice b. body centered cubic lattice c. simple cubic lattice d. othorhombic lattice
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37) During which process empty spaces between particles become minimum ? a. ionization b. condensation c. fusion d. evaporation
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38) Which one of the following has highest volatility_________________? a. Diethyl ether b. Ethyl alcohol c. Water d. Ethylene glycol
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39) If we provide very high amount of heat to a liquid its boiling point will__________________? a. increase b. remains constant c. decrease d. there will be no boiling
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40) A solid may be made up of_________________? a. Atoms b. Ions c. Molecules d. A, B, and C
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41) Amorphous substances posses_________________? a. No definite geometry b. No definite heat of fusion c. No sharp melting points d. All of the above
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42) 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
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43) The phenomenon in which a compound exists in two or more crystalline forms is called ________________? a. Isomorphism b. Polymorphism c. Anisotropy d. Allotropy
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44) Bucky balls is an allotropic from of__________________? a. Sulphur b. Carbon c. Silica d. Tin
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45) 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
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46) The pressure during the molar heat of fusion is kept________________? a. 0 atmosphere b. one atmosphere c. 2 atmosphere d. 10 atmosphere
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47) All the enthalpy changes are________________? a. Negative b. Positive c. May or may not be A or B d. none
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48) Which has strongest bonding in the solid state ? a. Hydrogen Chloride (HCI) b. Chlorine (Cl2) c. Xenon(Xe) d. Sodium Chloride (NaCI)
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49) 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
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50) Which one is false for evaporation ? a. Surface phenomenon b. Continuous c. Exothermic d. Cause cooling
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