General Knowledge :: Chemistry
- Which of the following is not a nitrogenous fetiliser?
- Which one of the following is used as a sowing agent in the preparation of soft drinks?
- Pyrethrin used in mosquito coil is obtained from
- What is a common name for the substance which irritates lachrymal glands ?
- Which of the following is used to iodise common salt ?
- What is the most commonly used substance in fluorescent tubes?
- Tetra ethyle lead (TEL) is