4.You are supposed to pour acid on a bottle. However, you accindentally poured it on your skin. What should you do? a.wipe the affected area with cloth b. Wash the affected area with water c. Apply ointment in the affected area
5.He is an english chemist proposed that elements be classified in the order of increasing atomic weights, the elements being assigned ordinal numbers from one upward and divided into seven groups. a. Dmitri inovich mendeleev b.john alexander reina newlands c. Johan wolfgang dobereiner d. Marie Curie



Nonsense : report