Question

Which among the given options are made up only by non-metals?

• A. Common salt
• B. Petrol
• C. Paper
• D. Plastic bag

Answer 1

Answer: (B), (C), (D)

Plastic bag

Petrol is made up of straight chain hydrocarbons which contains only H,C. As hydrogen and carbon are non-metals petrol is made of non metals.
Paper is made up of cellulose which has a chemical formula $(C_5{H}_{10}{O}_5{)}_n$. Cellulose consist of only C,H,O which are non-metals. So, paper is made up of non-metals
Plastic bags are made up of polyethylene which has a chemical formula $(C_2{H}_4{)}_n$. Polyethylene has only C,H which are non-metals. So, plastic bags are made up of non-metals.
Common salt has a chemical formula $NaCl$ which has sodium(Na) metal in it. So, common salt is not made up of only non-metals.