SCL ELECHEM

SCL ELECHEM

University

15 Qs

quiz-placeholder

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SCL ELECHEM

SCL ELECHEM

Assessment

Quiz

Chemistry

University

Medium

Created by

AHMAD UPM

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

1.      What is a potentiostat ?

    A device to measure the current and potential of the electrolyte in a electrochemical cell

  A electronic device that measures and controls the potential (or voltage) difference between two electrodes

     A device to control the rate at which electrode processes occurs

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

    What are some of the main characteristics of a potentiostat ?

     Voltage control

     Current measurement

   Heat control

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

    Some of the control modes of a potentiostat is a mixed mode and galvanostatic mode

True

False

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

   What is an operational- amplifier (OP-AMP) ?

     A mechanical amplifier that increases the output of current running through it

     A special circuit that is design to prevent large amount of current from running into the system

   A electronic circuit component powered by a DC voltage capable of amplifying an input voltage

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

   Feedback mechanism refers to a process where energy stored in the capacitor of a circuit is reuse to increase output voltage.

True

False

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Oxidation reaction occurs at the

anode

cathode

electrolyte

external circuit

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

What is the function of a salt bridge?

o prevent charge buildup

to complete the circuit

to allow the flow of electrons from anode to cathode

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