Bisphenol A (BPA), a cause of concern is a structural/ key component in the manufacture of which of the following kinds of plastics?

Which among the following compounds is the main constituent of natural gas?

Which one of the following is a covalent compound?

Which one of the following acids is secreted by leaves of Nettle that causes painful stings?

Which one of the following oxides is a neutral oxide?

Which one of the following statements is not correct?