Chemical Effects of Electric Current

Chemical Effects of Electric Current Worksheet-4

1. In a cell, by convention, charge is taken to be flowing from :

(a) positive electrode to negative electrode

(b) negative electrode to positive electrode

(c) both positive electrode to negative electrode and negative electrode to positive electrode

(d) none of these

2. Metals are good conductors because:

(a) outer electrons are strongly bound to the atom

(b) outer electrons are loosely bound to the atom

(c) inner electrons are loosely bound to the atom

(d) protons can detach from the nucleus and conduct electricity

Chemical Effects of Electric Current Worksheet-5

1. Electroplating is based on

(a) Magnetic effect of electricity

(b) Chemical effect of electricity

(c) Heating effect of electricity

(d) Physical effect of electricity

2. An electrolyte

(a) Has positive charge

(b) Has negative charge

(c) Should be able to conduct charge without dissociating

(d) Should be able to form positive and negative ions

Chemical Effects of Electric Current Worksheet-6

1. Ammonium chloride in dry cell is

(a) A paste                                      (b) In liquid state

(c) In solid state                            (d) In gaseous state

2. Sulphate ions in an electrolyte move towards

(a) Cathode

(b) Anode

(c) Middle of the two electrodes

(d) Each other