Electrochemistry MCQ - 1 (Advanced) - JEE MCQ
19 Questions MCQ Test - Electrochemistry MCQ - 1 (Advanced)
During discharging of lead storage battery, which of the following is/are true?
Which of the following arrangement will produce oxygen at anode during electrolysis?
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If 270.0 g of water is electrolysed during an experiment performed by miss abhilasha with 75% current efficiency then
Pick out the correct statements among the following from inspection of standard reduction potentials (Assume standard state conditions).
The EMF of the following cell is 0.22 volt.
Ag(s) |AgCl(s)|KCl(1M)|H+(1M)|H2(g) (1atm); Pt(s)
Which of the following will decrease the EMF of cell.
Equal volumes of 0.015 M CH3COOH & 0.015 M NaOH are mixed together. What would be molar conductivity of mixture if conductivity of CH3COONa is 6.3 × 10-4 S cm-1
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement-1 : The voltage of mercury cell remains constant for long period of time.
Statement-2 : It is because net cell reaction des not involve active species.
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement-1 : The SRP of three metallic ions A+, B2+, C3+ are -0.3, -0.5, 0.8 volt respectively, so oxidising power of ions is C3+ > A+ > B2+
Statement-2 : Higher the SRP, higher the oxidising power.
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement-1 : We can add the electrode potential in order to get electrode potential of net reaction.
Statement-2 : Electrode potential is an intensive property.
The questions given below consist of Statement– I and Statement – II. Use the following Key to choose the appropriate answer.
Statement - I. In electrolysis, the quantity of electricity needed for depositing 1 mole of silver is different form that required for 1 mole of copper.
Statement - II. The atomic weights of silver and copper are different.
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement - I. CuSO4 solution cannot safely be kept in a Zn vessel usual.
Statement - II. The position of Zn is lower than Cu in Electro-chemical-series.
The questions given below consist of Statement – I and Statement– II. Use the following Key to choose the appropriate answer.
Statement - I. Zinc displaces copper from copper sulphate solution..
Statement - II. The Eº is Zn of –0.76 volt and that of copper is +0.34 volt.
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement - I. Gold chloride (AuCl3) solution cannot be stored in a vessel made of copper, iron, nickel, chromium, zinc or tin.
Statement - II. Gold is very precious metal.
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement - I . Specific conductance decreases with dilution whereas equivalent conductance increases.
Statement - II. On dilution, number of ions per cc decreases but total number of ions increases considerably.
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement - I. Salt bridge is used in Electro chemical cell.
Statement - II. The ions of the electrolyte used in salt bridge should have almost same ionic mobility.
The questions given below consist of Statement – I and Statement – II. Use the following Key to choose the appropriate answer.
Statement - I. Absolute value of an electrode potential can not be calculated.
Statement - II. Neither oxidation nor reduction can take place alone.
Comprehension
Paragraph -1
A sample of water from a large swimming pool has a resistance of 10000 ohm at 25ºC when placed in a certain conductance cell. When filled with 0.02 M KCl solution, the cell has a resistance of 100 ohm at 25ºC. 585 gm of NaCl were dissolved in the pool, which was throughly stirred. A sample of this solution gave a resistance of 8000 Ω.
[Given : Molar conductance of NaCl at that concentration is 125 ohm-1cm2mol-1 and molar conductivity of KCl at 0.02 M is 200 Ω-1cm2 mol-1.]
Q.
Cell constant (in cm-1) of conductance cell is :
A sample of water from a large swimming pool has a resistance of 10000 ohm at 25ºC when placed in a certain conductance cell. When filled with 0.02 M KCl solution, the cell has a resistance of 100 ohm at 25ºC. 585 gm of NaCl were dissolved in the pool, which was throughly stirred. A sample of this solution gave a resistance of 8000 Ω.
[Given : Molar conductance of NaCl at that concentration is 125 ohm-1cm2mol-1 and molar conductivity of KCl at 0.02 M is 200 Ω-1cm2 mol-1.]
Q.
Conductivity (Scm-1) of H2O is :
A sample of water from a large swimming pool has a resistance of 10000 ohm at 25ºC when placed in a certain conductance cell. When filled with 0.02 M KCl solution, the cell has a resistance of 100 ohm at 25ºC. 585 gm of NaCl were dissolved in the pool, which was throughly stirred. A sample of this solution gave a resistance of 8000 Ω.
[Given : Molar conductance of NaCl at that concentration is 125 ohm-1cm2mol-1 and molar conductivity of KCl at 0.02 M is 200 Ω-1cm2 mol-1.]
Q.
Volume (in Litres) of water in the pool is:
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