Physical Chemistry (CHE201)

1. An azeotrope is a mixture that exhibits the same concentration in the ________?

   1. vapor phase and the liquid phase
   2. vapor phase and the gas phase
   3. liquid phase and the solid phase
   4. vapor phase and the solid phase

2. In fractional distillation collecting liquid with a ________, you may need to surround the collecting flask with a beaker of cold water or ice.

   1. very low boiling point
   2. very high boiling point
   3. moderate boiling point
   4. critical boiling point

3. The solution shows a decrease in melting point as the amount of solute is ________?

   1. increased
   2. decreased
   3. remain constant
   4. approaches to zero

4. A solution of water and sugar is called ________?

   1. saline
   2. brine
   3. syrup
   4. None of the given

5. 1 ppt is 1000-fold more dilute than 1 ppb and ________ more dilute than 1 ppm.

   1. 10000000-fold
   2. 1000000-fold
   3. 1000-fold
   4. 10-fold

6. The density of dilute aqueous solutions are close to ________?

   1. 1 g/1000ml
   2. 1 mg/mL
   3. 1 g/mL
   4. 1 g/100mL

7. Points and is commonly used for determining initial rates and inhibition values.

   1. Continuous Flow
   2. Batch flow
   3. Discrete flow
   4. None of the given

8. If a catalyst is added to the reaction, the activation energy is lowered because

   1. A lower energy transition state is formed
   2. A higher energy transition state is formed
   3. A lower energy transition state is not formed
   4. A normal energy transition state is not formed

9. The differential rate law can show us how the ________ of the reaction changesin time, while the integrated rate equation shows how the ________ of species changes over time.

   1. Rate, Concentration
   2. Order, Concentration
   3. Rate, Order
   4. Surface, Order

10. ΔGo is the change in Gibbs energy when the reaction happens at ________.

    1. Standard State
    2. Transition state
    3. 290K
    4. Critical State

11. Concept of activation energy is given by ________?

    1. Boltzmann
    2. Michel Faraday
    3. Svante Arrhenius
    4. None of the given

12. HCl is ________ molecule.

    1. highly polar
    2. partially polar
    3. non-polar
    4. None of the given

13. ________ shows how the concentration of species changes over time.

    1. differential rate law
    2. Integrated rate equation
    3. order of reaction
    4. mole fraction

14. If the molecules in the reactants collide with enough kinetic energy and this energy is ________ the transition state energy, then the reaction occurs and products formed.

    1. higher than
    2. equal to
    3. lower than
    4. None of the given

15. Arrhenius performed experiments that coorelated chemical reaction rate constants with

    1. Temperature
    2. Pressure
    3. Volume
    4. Concentration

16. In a chemical reaction, the transition state is defined as the ________ energy state of the system.

    1. Highest
    2. lowest
    3. Constant
    4. Critical

17. Formation of double stranded DNA from two cpmplementary strands is

    1. First order reaction
    2. Second order reaction
    3. Third order reaction
    4. Order less reaction

18. Continuous Flow is a type of assay used to easily measure the progress of a reaction at discrete time points and is commonly used for determining ________ and inhibition values.

    1. final rates
    2. initial rates
    3. mechanism of reaction
    4. order of reaction

19. Fractional distillation of dilute nitric acid will enable you to collect ________ from the top of the fractionating column.

    1. pure nitric acid
    2. pure water
    3. mixture of water and nitric acid
    4. dilute nitric acid

20. Chemists remove small samples of a reaction mixture at various times and analyze the concentration using ________.

    1. Gravimetry
    2. Titration
    3. chromatography
    4. spectroscopy

21. Conversion of a substance from vapor to liquid is?

    1. Distillation
    2. Fractional distillation
    3. Condensation
    4. None of the given

22. It is impossible to get pure ethanol by distilling any mixture of ethanol and water containing less than ________ of ethanol.

    1. 98.6%
    2. 80.0%
    3. 95.6%
    4. 80.6%

23. Reactants which have absorbance values which change during the course of the reaction are therefore necessary to perform a traditional?

    1. Batch flow assay
    2. Discrete flow assay
    3. continuous flow assay
    4. None of the given

24. ________ is a liquid or solid with liquids dispersed through them.

    1. Emulsion
    2. Foam
    3. Gel
    4. Aerosol

25. For gases, experimenters use a buret to measure the change in volume produced at different times. They then relate these volumes to changes in ________.

    1. Concentration
    2. Pressure
    3. Temperature
    4. Volume

26. Petroleum refineries use ________ to separate crude oil.

    1. Distillation
    2. Condensation
    3. precipitation
    4. solvation

27. A reaction rate found

    1. numerically
    2. Theoretically
    3. Experimentally
    4. None of the given

28. The reaction must be balanced with the coefficients written as ________ values in order to get the correct value for Kc.

    1. lowest possible integer
    2. highest possible integer
    3. constant value
    4. zero

29. When ________ established. No unbalanced forces act on or within the system.

    1. Mechanical Equilibrium
    2. chemical Equilibrium
    3. thermal Equilibrium
    4. material Equilibrium

Select a course code for Objective Questions:

ACC311 ACC501 BIF101 BIF401 BIF501 BIO101 BIO201 BIO202 BIO203 BIO204 BIO301 BIO302 BIO303 BIO401 BIO503 BNK603 BT101 BT201 BT301 BT302 BT401 BT402 BT403 BT404 BT405 BT406 BT501 BT504 BT505 BT604 CHE201 CHE301 CS001 CS101 CS201 CS202 CS204 CS301 CS302 CS304 CS311 CS401 CS402 CS403 CS408 CS501 CS502 CS504 CS506 CS508 CS601 CS602 CS604 CS605 CS607 CS609 CS610 CS614 CS707 CS710 ECO401 ECO402 ECO403 ECO404 EDU302 EDU401 EDU402 EDU501 EDU601 ENG101 ENG201 ENG301 ENG501 FIN611 FIN624 FIN625 ISL201 IT430 MCM101 MCM301 MGMT623 MGT101 MGT211 MGT301 MGT401 MGT402 MGT501 MGT502 MGT503 MGT510 MGT601 MGT603 MKT501 MKT610 MKT630 MTH101 MTH202 MTH302 MTH501 MTH601 MTH634 PAK301 PHY101 PHY301 PSY101 PSY403 PSY502 PSY512 SOC101 SOC301 SOC401 STA301 STA630 STA641 ZOO102 ZOO401 ZOO501 ZOO502 ZOO503 ZOO504 ZOO505 ZOO506 ZOO510 ZOO630

Select a course code for Subjective Questions:

ACC311 CS001 CS101 CS201 CS301 CS607 CS701 CS702 CS703 CS704 CS707 CS708 CS710 CS711 CS718 CS721 CS724 ECO401 ECO403 ENG101 ENG301 MGT703 MTH501 STA301