Chemistry questions
29404 published questions with worked solutions.
- When one coulomb of charge is passed the quantity of silver deposited is _________ [MH CET 2010]
- The value of one Faraday is ________ [AMU 1983, AFMC 1989, MP PET 2001]
- When 0.5 amp of current was passed for 200 seconds, 0.34 gm of copper was deposited, the electrochemical equivalent of copper...
- Electrolysis is a process in which the cations and anions of the electrolyte are ________ [MP PET 1995]
- The amount of silver deposited by passing 241.25 coulombs of current through silver nitrate solution is ________
- From the solution of which of the following one Faraday of electricity will liberate one gram atom of metal?
- When 0.1 mol MnO_4^ 2- is oxidised the quantity of electricity required to completely oxidise MnO_4^ 2- to MnO_4^- is _________...
- If 9650 coulombs of electricity is passed through a copper sulphate solution, the number of moles of copper deposited will be...
- The number of electrons required to reduce 4.5 10^ -5 g of aluminium is _________ [MH CET 2009]
- Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time required to liberate...
- 20 mL solution of 0.1 M ferrous sulphate was completely oxidised using a suitable oxidising agent. What is the number of...
- The weight of silver (atomic weight = 108) displaced by a quantity of electricity which displaces 5600 mL of O_2 at STP will be...
- The resistance of 0.01 N NaCl solution at 25℃ is 200 Ω. Cell constant of conductivity cell is 1 cm^ -1 . The molar conductance is...
- Resistance of 0.2 M solution of an electrolyte is 50 Ω. The conductance of the solution is 1.4 S ,m^ -1 . The resistance of 0.5 M...
- The molar conductivity is maximum for the solution of concentration ________
- The limiting molar conductivities ^ for NaCl, KBr and KCl are 126, 152 and 150 S ,cm^ 2 ,mol^ -1 respectively. The ^ for NaBr is...
- Which of the following conducts electricity? [AFMC 1995]
- If 0.5 amp current is passed through acidified silver nitrate solution for 10 minutes. The mass of silver deposited on cathode,...
- An aqueous solution of copper sulphate is electrolysed. The atomic mass of the copper, if the electrochemical equivalent is 3.29...
- When same quantity of electricity is passed for half an hour. The amount of Cu and Cr deposited are respectively 0.375 g and 0.30...