Which of the following is one of the most common applications of electric current?
Etching
Galvanizing
Electroplating.
Anealing
................ present in the lemon juice acts as a electrolyte.
Nitric acid
Sulphuric acid
Citric acid
Hydrochloric acid
Which of the following statements is correct?
A negatively charged particle has higher electric potential than a positively charged particle
Charge flow only through negative charge carriers like electrons
The randomly moving electrons in a metal wire will start moving in a particular direction when a potential difference is applied across it.
During electrolysis, charge flows through electrolyte solution via electrons
Who proved that when electrodes are immersed in water and currents are passed, bubbles of oxygen and hydrogen were produced?
Games Watt.
J.J.Thomson.
Issac Newton.
William Nicholson.
The common dry cell produces a voltage of
60 V
1.5 V
3 V
30 V
The conductors through which current enter or leaves the electrolyte are called
electrodes.
Semiconductor.
insulators.
None of these.
In a cell,the electron movement will be :
Positive electrode to negative electrode
Negative electrode to positive electrode
Both A and B
Electrons do not move and only negative charge moves from one place to another place
When an electron moves from negative electrode to positive electrode:
Negative charge moves from negative electrode to positive electrode.
Positive charge moves from positive electrode to negative electrode .
No charge flows from either electrode to other electrode.
Both A and B.
Dilute sulphuric acid splits into
Oxygen ions, hydrogen ions and sulphur ions.
Hydrogen ions, oxygen ion and sulphate ions.
Hydrogen ions and sulphate ions.
Oxygen ions and hydrogen ions.
Potential difference is measured in
Ohm
Coulomb
Ampere
Volt
