Which of the following is NOT a major use of natural gas? Option: Cooking, Transportation fuel, Heating, Power generation

Which of the following is NOT a major use of natural gas?

What is the primary component of natural gas?

What type of power plants do larger cement manufacturers often maintain to reduce fuel costs?

What is a major cost center for steelmakers?

Which of the following industries does NOT utilize silver in its applications?

What is the primary application of nickel?