Question

Which of the following metals does not react with air?
1. Gold, Platinum
2. Silver, Platinum
3. Potassium, Mickel
4. Gold, Silver

Answer 1

Correct Answer - Option 1 : Gold, Platinum

The correct answer is Gold, Platinum.

• Metals are lustrous, malleable, ductile, good conductors of heat and electricity.
  • Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature (Gallium is liquid on hot days).

• Many chemical elements are referred to as metals.
  • These are the bulk of the periodic table elements. Generally, such components have the following characteristics: these can conduct heat and electricity. They can be easily shaped.
• Oxygen is a non-metal that is used for breathing by plants and animals.
  • It is essential to maintain our life.
  • It is used in the process of fuel-burning in homes, factories, and vehicles for transport.
• Oxygen is an essential non-metal for our life and it is inhaled during breathing by all living beings.
• The non-metal used in the rockets is liquid hydrogen.
• They are separate hydrogen and oxygen tanks that combine and burn to start the rocket.
• Due to its high calorific value, hydrogen is used.