Q1.Difference between ionic (electrolytic) and electronic conductivity is that electronic conductance takes place in metals by ________ conductance takes place in solutions by ions
Answer : Option AExplaination / Solution:
Electrolytic conductivity is due to the movement of ions and electronic conductivity is due to the movement of electrons.
Q2.When measuring conductivity with a conductivity cell, cell constant denoted by the symbol G* is given by (electrode area of cross section equal to ‘A’ and separated by distance ‘l’)
Answer : Option CExplaination / Solution:
Cell constant = length of electrodes/ Area of electrodes.
Q5.According to Faraday’s First Law of ElectrolysisThe amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the
Answer : Option BExplaination / Solution:
Faraday’s first law of electrolysis states that amount of substance deposited at any of the electrode is directly proportional to amount of charge passed.
Q6.According to Faraday’s Second Law of Electrolysis the amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional
Answer : Option BExplaination / Solution:
The amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional to their chemical equivalent weights.
Q7.Charge on one mole of electrons - Faraday is approximately
Answer : Option BExplaination / Solution: Charge on one electron is 1.6 x 10−19 C. 1 mole of electron 6.023x1023electrons. So charge on one electron is 1.6 x 10−19 x 6.023 x 1023 = 96500 C
Q10.Fuel cells are ________ that are designed to convert the energy of combustion of fuels like hydrogen, methane, methanol, etc. directly into_________.
Answer : Option AExplaination / Solution:
Fuel Cells converts energy coming from the combustion of fuels directly to electrical energy.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0