The process of chemical decomposition of a solution on passing electric current through it is known as
When the ends of metal wire are not connected to a battery:
Electrons move from positive electrode to negative electrode.
Electrons move from negative electrode to positive electrode.
Electrons move in random directions.
Protons move in random direction in such a way that their net movement in a unit volume is zero.
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.
Who proved that when electrodes are immersed in water and currents are passed, bubbles of oxygen and hydrogen were produced?
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.
When an atom loses an electron
Atom acquires negative charge
Atom acquires positive charge
Electron acquires positive charge
The algebric sum of charge present inside an atom remains same
Which of the following present in the lemon juice acts as electroplate?
Charge can flow one place to another
Only through electrons.
Only through protons.
Through electorns, protons and ions.
Only through negative charge carriers.
Charge flows between two ends of a conductor when
Equal and same type of charges are present at the two ends
Different electric potentials exist at the two ends of a conductor
The potential difference between the ends is zero
Same electric potential is present at the two ends
In a cell, electrons move from:
Positive electrode to negative electrode.
Negative electrode to positive electrode.
Electrones do not move and only negative charge moves from one place to another place.