Two tests are carried out on an NPK fertiliser. test 1 flame test test 2 warm with aqueous sodium hydroxide and aluminium foil What observations are made?
- Atest 1: green flame; test 2: gas evolved which turns red litmus blue
- Btest 1: green flame; test 2: gas evolved which turns blue litmus red
- Ctest 1: lilac flame; test 2: gas evolved which turns red litmus blue
- Dtest 1: lilac flame; test 2: gas evolved which turns blue litmus red