The Fascinating World of Cobalt

Cobalt, a shiny gray metal, is known for its role in creating the blue pigment used in art and ceramics. Discovered by George Brand, cobalt's name comes from the German word 'kobolt,' meaning goblin. It is used in various applications, from pigments in art to industrial uses like superalloys for turbine blades and medical uses such as orthopedic implants. Cobalt is also significant in producing permanent magnets and lithium-ion batteries. Its radioactive isotope, cobalt-60, is used for sterilization and food preservation.

Who is credited with the discovery of cobalt as a distinct element?

• Marie Curie

• Dmitri Mendeleev

• George Brand

• Isaac Newton

What is the primary use of cobalt in art and decoration?

• Creating red pigments

• Producing blue colors in glass and porcelain

• Making green dyes

• Forming black ink

Which alloy is known for its use in making permanent magnets due to cobalt's properties?

• Steel

• Brass

• Alnico

• Bronze

What is a significant application of cobalt in the medical field?

• In orthopedic implants

• In dental fillings

• As a pain reliever

• For treating infections

Which cobalt compound is used in lithium-ion battery cathodes?

• Cobalt tanate

• Cobalt nitrite

• Cobalt aluminate

• Lithium cobalt oxide