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Chemistry MCQ Question - Electrochemistry

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1 In a galvanic cell
✅ Correct Answer: 1
2 The degree of dissociation of week electrolyte increases as
✅ Correct Answer: 3
3 Molten NaCl conducts electricity due to the presence of
✅ Correct Answer: 3
4 In which of the following reactions occur at cathode?
✅ Correct Answer: 1
5 Electricity in voltaic cell is produced due to
✅ Correct Answer: 4
6 In electrolytic solution conductance of electricity is due to
✅ Correct Answer: 2
7 In electrolytic cell electricity carries
✅ Correct Answer: 2
8 Reaction at anode is called
✅ Correct Answer: 1
9 In an electrolytic cell cathode provides electrons to
✅ Correct Answer: 1
10 In Galvanic cell electrons flow from anode to cathode through
✅ Correct Answer: 1
11 Decrease in oxidation number is called
✅ Correct Answer: 2
12 For the measurement of standard electrode potential Zn is dipped in
✅ Correct Answer: 2
13 Right half cell contains __________ electrode
✅ Correct Answer: 3
14 Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in
✅ Correct Answer: 3
15 Salt bridge transfers
✅ Correct Answer: 4
16 Voltaic cell can be recharged by
✅ Correct Answer: 2
17 E0red of an element cab be calculated by comparing it with
✅ Correct Answer: 2
18 Temperature for the measurement of standard electrode potential is
✅ Correct Answer: 1
19 H2 gas in SHE is filled at pressure of
✅ Correct Answer: 1
20 Potential of SHE is considered as
✅ Correct Answer: 1
21 Chemical used in salt bridge is
✅ Correct Answer: 2
22 Electrode potential of Zn is
✅ Correct Answer: 4
23 List of elements based on hydrogen scale is called
✅ Correct Answer: 4
24 The element that act as anode always have _______ position in electrochemical cell
✅ Correct Answer: 1
25 In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be
✅ Correct Answer: 1
26 Greater value of standard reduction potential greater will be tendency
✅ Correct Answer: 4
27 Greater value of standard reduction potential smaller will be tendency
✅ Correct Answer: 1
28 Secondary cell is
✅ Correct Answer: 1
29 Lead accumulators are
✅ Correct Answer: 4
30 Density of H2SO4 in lead accumulator is
✅ Correct Answer: 1
31 Capacity of one lead accumulator cell is
✅ Correct Answer: 2
32 In alkaline battery the anode is made up of
✅ Correct Answer: 2
33 The strength of solution of an element whose electrode potential is to be measured is
✅ Correct Answer: 4
34 Apparent charge on atom in molecule is
✅ Correct Answer: 3
35 Voltaic cell is a
✅ Correct Answer: 4
36 In K2Cr2O7 the oxidation number of chromium is
✅ Correct Answer: 2
37 Percentage of sulphuric acid in lead accumulator is
✅ Correct Answer: 3
38 The reduction potential Zn is
✅ Correct Answer: 2
39 The half cells are interconnected through
✅ Correct Answer: 2
40 I ? A elements are named as alkali metals because
✅ Correct Answer: 3
41 The word Alkali means
✅ Correct Answer: 3
42 Formula of Chile saltpetre is
✅ Correct Answer: 1
43 The elements which are very abundant in earth crust are
✅ Correct Answer: 1
44 The oxides of beryllium BeO is
✅ Correct Answer: 3
45 Which element is necessary for normal leaf development?
✅ Correct Answer: 4
46 Li is different from its family members due to
✅ Correct Answer: 4
47 Carbonates of lithium are not stable like that of sodium due to
✅ Correct Answer: 2
48 Nitrates of which pair of elements give different products on thermal decomposition?
✅ Correct Answer: 3
49 Which one of the following is not an alkali metal?
✅ Correct Answer: 4
50 Which of the following sulphates is not soluble in water?
✅ Correct Answer: 4
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