Which of the following elements is the most conductive? 1) Cupro-nickel 2) Iron silicon 3) The colour silver

Question : Which of the following are the main components of stainless steel?

Option 1: Iron and carbon

Option 2: Silver

Option 3: Iron, chromium and nickel

Option 4: Iron and nickel

Question : Which of the following metals is the heaviest?

Option 1: Iron

Option 2: Silver

Option 3: Nickel

Option 4: Osmium

Question : The core of the Earth is made up of___________.

Option 1: cobalt and nickel

Option 2: iron and cobalt

Option 3: nickel and magnesium

Option 4: nickel and iron

Question : German silver is an alloy of

Option 1: Copper, nickel and silver

Option 2: Silver ,copper and aluminium

Option 3: Zinc copper and nickel

Option 4: Zinc silver and copper