CHM201

Category: CHM201

ATTENTION:

Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.

Good luck!

CHM201

1 / 50

1. Which of the followings is not a type of system?

A. Closed

B. Open

C. Intensive

D. Isolated

2 / 50

2. Which of these is not an extensive property of a system?

A. Volume

B. Mass

C. Energy

D. Density

3 / 50

3. The ___________ law of thermodynamics discusses entropy.

4 / 50

4. A process taking place at constant pressure is termed _________

5 / 50

5. In order for a reaction to occur, the particles must __________

6 / 50

6. A reaction catalyzed by light is called a ___________ reaction

7 / 50

7. Rate of reaction generally ____________ with the rise of temperature.

8 / 50

8. Which of the following statements describes an isolated system?

A. only exchange of energy with the surrounding is possible

B. exchange of both matter and energy with the surrounding is possible

C. No exchange of matter and energy with the surrounding is possible

D. only exchange of matter with the surrounding is possible

9 / 50

9. The change in entropy for any process is not dependent upon the pathway by which the process occurs. In order words, the change in entropy for any process is a _________ function

10 / 50

10. The higher the pH, the ___________ the acidity

11 / 50

11. A solution of a weak acid and its salt is known as a ________ solution

12 / 50

12. Milk sours more rapidly in summer than in winter because ____________

A. in summer, the energy of activation decreases and hence the of reaction becomes fast

B. none of the above

C. in winter, number of molecules per unit volume increases and hence the rate of reaction becomes fast

D. in summer, the temperature Is high due to which effective collisions increase and hence the rate of reaction becomes fast

13 / 50

13. The rate at which a substance takes part in a chemical reaction depends upon its ____________

14 / 50

14. Which of the following is not a state function?

A. entropy

B. enthalpy

C. work

D. free energy

15 / 50

15. For any process, the change in entropy of the universe equals the sum of entropy changes to the system and the _________

16 / 50

16. Rate of reaction is defined as the __________

A. Rate of change of conc. of product only

B. Rate of change of concentration Of either reactant or product per unit time

C. None of the above

D. Rate of change of conc. of reactant only

17 / 50

17. The term -dx/dt in a rate expression refers to the ________

A. increase in concentration of the reactants

B. instantaneous rate of the reaction

C. Average rate of the reaction

D. Change in concentration of the reactants with time

18 / 50

18. The conjugate base of HCl is __________

19 / 50

19. __________ Variables are dependent on the mass of the material.

20 / 50

20. In general, the rate of a reaction can be increased by all the factors except ___________

A. Increasing the concentration of reactants

B. Increasing the activation energy

C. Increasing the temperature

D. Using a catalyst

21 / 50

21. The minimum additional energy, above the average internal energy, which the reacting molecules must possess so that their collision result in a reaction is known as ____________

A. Activation energy

B. Kinetic energy

C. Thermodynamic energy

D. Threshold energy

22 / 50

22. There are ___________ laws of thermodynamics

23 / 50

23. Rusting of iron Is an example of________ reaction

A. explosive

B. Fast

C. Moderate

D. Slow

24 / 50

24. The _________ scale of temperature has absolute zero for its zero point

25 / 50

25. Which of the following expressions is associated with the law of conservation of energy?

A. dG = dH – TdS

B. H = E + PV

C. dE = q + w

D. q = mCdT

26 / 50

26. The ___________ law of thermodynamics discusses entropy.

27 / 50

27. Only __________ substances can undergo electrolysis.

28 / 50

28. If the rate of a reaction increases by a factor of 9 when the concentration of a reactant is tripled, then the reaction is ___________order with respect to that reactant.

29 / 50

29. One mole of an ideal gas is heated at a constant pressure of 101300 $N m^{-2}$, from 273.2 K to 373 K. Calculate the work involved R = 8.314 J/mol/K).

A. 8314 J/mol

B. 8.314 J/mol

C. 83.14 J/mol

D. 831.4 J/mol

30 / 50

30. __________ system is a system in which both energy and matter can exchange with the surroundings.

31 / 50

31. _____________ Variables are independent of the mass of material.

32 / 50

32. ______________ is the amount of heat required to melt one gram of substance at its melting point.

33 / 50

33. The ___________ scale of temperature has absolute zero for its zero point

34 / 50

34. The first law of thermodynamics deals with ____________

35 / 50

35. A (an) ___________ system is one which neither shows exchange of heat nor mass with its surroundings

36 / 50

36. The sum of all exponents of concentration terms in the rate equation is called __________

37 / 50

37. Which of the following statements is correct?

A. temperature is an intensive property while heat is an extensive property

B. both temperature and heat are extensive properties.

C. both temperature and heat are intensive properties

D. Temperature is an extensive property while heat is an intensive property

38 / 50

38. The entropy of a pure crystal at 0 K is _________ J/K.

39 / 50

39. The total energy of the universe is constant. This is a statement of the ___________ law of thermodynamics

40 / 50

40. Free energy change at equilibrium is ___________

41 / 50

41. If more collisions can be made to take place in a given time, the rate of the reaction will ___________

42 / 50

42. Which of these is true of an isochoric system?

A. Pressure is not constant

B. Volume remains constant

C. Heat is allowed into the system but not allowed out of the system

D. Takes place at constant temperature

43 / 50

43. The first law of thermodynamics deals with _________

A. conservation of energy

B. thermodynamic equivalence

C. absolute zero temperature.

D. entropy

44 / 50

44. The reactions with the high value of energy of activation are _________

A. Moderate

B. Not feasible

C. Fast

D. Slow

45 / 50

45. In a reaction in which the rate of the reverse reaction is equal to the rate of the forward reaction, a state of __________ is attained.

46 / 50

46. A process in which no heat is allowed to enter or leave a system is termed _______

47 / 50

47.

Every type of chemical bond contains a certain amount of energy. The total bond energy, which is essentially equivalent to the total potential energy of the system, is a quantity known
as: ____________

48 / 50

48. The minimum additional energy, above the average internal energy, which the reacting molecules must possess so that their collision result in a reaction is known as _____________

49 / 50

49. A substance that is capable of acting as both an acid and as a base is ______________

50 / 50

50. The pH of an aqueous solution which is 0.0020 M is _________

Rate this quiz