Question

State True or False. ‘Pure water is a good conductor of electricity.’
(A) True
(B) False

Answer 1

Hint : Electricity is the flow of electrons through a substance. Pure water has its salts removed and one molecule of water contains two hydrogen atoms and one oxygen atom.

Complete step by step answer
Conductivity of a substance is defined as the ability of a material to conduct electricity, heat or sound. Conduction of electricity is the ability of a substance to transmit electrons through it. Electric current is generated by the motion of electrons in an applied electric field. The electrical conductivity depends on the number of available free electrons. . Conductors have free electrons on its surface that allow current to pass through it. Good conductors are those that allow free movement of electrons, such as metals. Humans, animals and the earth are all good conductors
Insulators, on the other hand, are non conducting materials that support only insignificant amounts of electric current.
Water, when impure, contains several ions that are capable of transmitting current. Common table salt (NaCl) is one of them. Even a small amount of ions dissolved in water makes it capable of transmitting just one electron and oxygen has a fully filled valence shell with eight electrons. Both of these cannot allow the flow of electrons which is conduction of electricity. So there are no ions present that provide electricity.
Pure water does not conduct electricity. It is an excellent insulator. Pure, distilled water has all its minerals and dissolved constituents removed. The water molecule is made of hydrogen and oxygen atoms. Hydrogen can transmit electric current.
$\therefore $ The given statement is not true. The correct answer is Option B.

Note
Adding impurities, even in small amounts in pure water includes atoms that can release free electrons. Impure water thus has a lot of free electrons and these free electrons make the impure water a good conductor of electricity.