Metals and Non-...

Which of the following properties of aluminium makes it useful to make parts of airplanes?

Statement I: Nowadays, instead of copper, aluminium is used to make electrical wires.
Statement II: Aluminium is cheaper than copper, that's why it is a good substitute of copper.

Heena's class teacher told her that silver and gold metals do not react with air and water. But, she noticed that her payal tarnished after some time. The reason of tarnishing of her silver payal is reaction with

While performing an experiment, Rohit added HCl in a test tube containing metal 'X' and no effervescence was produced. This means that no hydrogen gas was produced. According to his class teacher, the metal 'X' is

Riya often feels fatigue and weakness. Her doctor diagnosed her haemoglobin level as being low. This is due to the deficiency of a certain element. The name of the element is

Sodium, potassium and arsenic cannot be drawn into wires because

The base of utensils is coated with copper and handles are made of wood. Why?

Copper and aluminium wires are used in making electrical appliances. Which of the following properties is responsible for this?

What is the nature of the oxides formed by metals when they react with oxygen?

How does a litmus test help in finding whether a solution is a base or not?