Charge can flow one place to another
Only through electrons.
Only through protons.
Through electorns, protons and ions.
Only through negative charge carriers.
In electrolytic solutions, carrier of charge is:
Proton.
Electron.
Neutron.
Ion.
................ present in the lemon juice acts as a electrolyte.
Nitric acid
Sulphuric acid
Citric acid
Hydrochloric acid
Iron used in bridges and automobiles are coated with
tin.
lead.
zinc.
Chromium.
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.
Physical reaction.
Chemical reaction.
No reaction.
None of these.
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.
Which of the following is an insulator?
Wood.
Iron.
Carbon.
Silver.
A cell converts:
Electrical energy into chemical energy.
Chemical energy into electrical energy.
Magnetic energy into electrical energy.
Electrical energy into mechanical energy.
Metals are good conductors because
Outer electrons are loosely bound to the atom
Outer electrons are strongly bound to the atom
Inner electrons are loosely bound to the atom
Protons can detach from the nucleus and conduct electricity
