31. The electric charge for electrode deposition of one gram-equivalent of substance is:
A. Charge on one mole of electrons
B. One ampere per second
C. One ampere for one hour
D. One coulomb for one second
32. When the same amount of electricity is passed through two electrolytic cells, the ratio of masses of substances obtained at cathodes is equal to the ratio of their:
A. Densities
B. Atomic Masses
C. Equivalent masses
D. Atomic Numbers
33. Which of the following Metal cannot be obtained by electrolysis of Aq-solution of their salts?
A. Ag
B. Cu
C. Na
D. Au
34. Which of the following is not an example of an electrolytic cell?
A. Nelson’s cell
B. Daniel cell
C. Down’s cell
D. All of the above
35. Anode used in Dry cell is:
A. Cu
B. Graphite
C. Zn
D. Fe
36. The echo of the Big Bang can be heard in the form of?
(A) Alfa rays
(B) Gamma rays
(C) Infrared radiations
D) Microwave radio signals
37. The solution of which acid is used for seasoning of food?
(A) Acetic acid
(B) Formic acid
C) Benzoic acid
(D) Botanic acid
38. Which element is the most abundant in the human body?
(A) Hydrogen
B) Oxygen
(C) Carbon
(D) Nitrogen
39. Enzymes are organic catalysts made up of:
A) Proteins
B) Carbohydrate
C) Fats
D) Glucose
40. What is the number of natural satellites orbiting around the planet Mars?
(A) 1
B) 2
(C) 3
(D) 4
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