John F. Kennedy was the US president during the Cuban Missile crisis General Secretary of the USSR was Nikita Krushchev and Fidel Castro was the Cuban ruler involved in this â¦ crisis.
What is the metal used for most electrical wiring and water pipes? Copper is the most common metal used in electrical wires because it has a structure which includes freely-moving negatively-charged particles-called electrons-which are es â¦ sential for the conduction of electricity.
Plastic or PVC pipes. There are 3 common types of plastic pipes are available in market, as given below. 1  Unplasticized PVC (UPVC) or rigid pipes for use with cold water. 2  Plasticized PVC pipes which are plasticized with addition of rubber. 3  Chlorinated PVC (CPVC) pipes which can withstand higher temperatures upto 120 0 (used to carry hot water).