Chemistry Class 10th

41. The Conversation of reactant into Products occur in _______ directed reaction

A) Forward

B) Reverse

C) Both A and B

D) None of the above

42. The conversion of Products back to reactants occur in _______ directed reaction.

A) Forward

B) Reverse

C) Both A and B

D) None of the above

43. Forward reaction occurs from ____ to ______.

A) Left to Right

B) Right to Left

C) Can occur both ways

D) None of the above

44. The Forward reaction is the fastest at _______.

A) Initial Stage

B) Final Stage

C) Midpoint

D) It is always fast

45. The Forward reaction gradually slows down.

A) True

B) False

46. The Reverse reaction takes place from _____ to _____.

A) Left to Right

B) Right to Left

C) Can go both ways

D) None of the above

47. The Reverse reaction is zero at:

A) Starting point

B) Mid Point

C) Final Point

D) None of the above

48. The Reverse reaction gradually speeds up:

A) True

B) False

49. When was the Law of Mass Action Presented and passed:

A) 1823

B) 1843

C) 1864

D) 1893

50. The Law of Mass Action was presented by two ______ chemists

A) Dutch

B) French

C) Polish

D) Norwegian

51. The Law of Mass Action was presented by:

A) Cato Guldberg

B) Peter Wage

C) Alexander Fleming

D) Both A and B

52. According to the Law of Mass Action, Speed of Chemical reaction is _______ to the product of molar concentration of reacting substance.

A) Equal

B) Unequal

C) Directly Proportional

D) Inversely Proportional

53. The _________ constant is mathematical relationship that shows how the concentration of products vary with the concentration of the reactants.

A) Plank’s

B) Equilibrium

C) Pressure

D) None of the above

54. In Kc , the subscript c denotes

A) Molar Concentration at Equilibrium

B) Molar Concentration at Starting

C) Molar Concentration at the ending

D) None of the above

55. The Value of Kc is dependent on:

A) Temperature

B) Pressure

C) Initial Concentration

D) Non of the above

56. A large value of KC shows that at equilibrium the product concentration is _____ than product concentration

A) Equal

B) Lesser

C) Greater

D) Proportional

57. The law of Chemical equilibrium is also called as:

A) The Law of Mass Action

B) Boyle Law

C) Charles Law

D) None of the above

58. Before the use of term “ Concentration” which of the following was used:

A) Active Mass

B) Reactor Quantity

C) Inducer No

D) None of the above

59. Equilibrium can be attained in Open Containers:

A) True

B) False

60. In Open container the reactants and the product can escape into the atmosphere:

A) True

B) False